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St. Albert Traffic Collision Statistics, 2014 Page 1
St. Albert
Traffic Collision
Statistics
2014
Transportation Branch
Engineering Services
City of St. Albert
St. Albert Traffic Collision Statistics, 2014 Page 2
TABLE OF CONTENTS
Glossary of Terms......................................................................................................... 3
2014 Collision Quick Facts........................................................................................... 5
Chapter 1: Introduction................................................................................................. 7
Background ................................................................................................................. 7
Structure of the Report ................................................................................................ 7
Geographical Location................................................................................................. 8
Roadway Network........................................................................................................ 9
Demographic Information .......................................................................................... 10
Population.............................................................................................................. 10
Registered Vehicles & Licensed Drivers ................................................................ 11
Neighborhoods .......................................................................................................... 12
Transit Network.......................................................................................................... 13
Speed Limits, School Zones, and Playground Zones ................................................ 14
Chapter 2: Historical Collision Statistics .................................................................. 15
City-wide Collision Trends (inclusive of both Public and Private Roads) ................... 15
Chapter 3: 2014 Collision Statistics on Public Roadways....................................... 19
Collision Trends on Public Roadways........................................................................ 19
Overview.................................................................................................................... 20
Intersection Collisions................................................................................................ 22
Temporal Distribution of Intersection Collision Occurrences.................................. 26
Mid-block Collisions................................................................................................... 31
Temporal Distribution of Mid-block Collision Occurrences..................................... 34
Collision by Neighbourhoods..................................................................................... 39
Vulnerable Road User Collisions ............................................................................... 41
Vehicle Wildlife Collisions.......................................................................................... 43
chapter 4: At-Fault Driver’s Information.................................................................... 44
St. Albert Traffic Collision Statistics, 2014 Page 3
GLOSSARY OF TERMS
Reportable Collision A vehicle collision that occurs on a public roadway or private
parking lot and results in death, injury and/or property damage
exceeding CAD $2,000.
Collision A motor vehicle collision occurs when a vehicle, as defined by
the Alberta Traffic Safety Act, comes in contact or collides with
another vehicle, pedestrian, cyclist, animal, road infrastructure
or debris. Royal Canadian Mounted Police (RCMP) report on
collisions occurring on public roadways, alleys, private and
public parking lots within the City of St. Albert’s jurisdiction.
Current legislation in Alberta requires a traffic collision be
immediately reported to the police if it results in death, injury or
property damage of $2,000 or more.
Fatality A fatality is the death of a person that occurs as a result of a
motor vehicle collision within 30 days of the collision.
Major Injury Persons with injuries or complaints of pain who went to a
hospital and were subsequently admitted, even if for observation
only.
Minor Injury Persons with injuries or complaints of pain that went to a
hospital and were treated in emergency (or refused treatment),
but were not admitted to the hospital. This also includes people
who indicated that they would seek medical treatment.
Fatal Collision A vehicle collision which resulted in a fatality.
Injury Collision A vehicle collision which resulted in either a major or minor
injury.
Property Damage Only
(PDO) Collision
A vehicle collision which resulted in property damage exceeding
CAD $2,000.
Collision Severity A classification of a collision based on the most severe result of
the collision, i.e., whether someone was killed (fatal), injured
(injury) or property damage (PDO) occurred.
Public Roadways For the purposes of reportable collisions, a roadway means any
primary highway, secondary highway, rural road, street, avenue,
parkway, alley, bridge where the public is ordinarily permitted to
drive or park a vehicle (with certain rules and restrictions).
Roadways are inclusive of sidewalks, boulevards and districts
adjacent to and parallel with the roadway.
Intersection Defined as extending 10 metres past the legally defined limits of
the outer crosswalk lines of an intersecting roadway.
St. Albert Traffic Collision Statistics, 2014 Page 4
Mid-block A section of roadway between two intersections.
Driver Action A category of contributing factors attributed to actions taken or
performed by a driver immediately prior to a collision occurring.
Collision Type Refers to the object struck by a motor vehicle during a collision
(including: a pedestrian, a motorcycle, a bicycle, an animal and
fixed object); or to what happened to the vehicle in a single
vehicle collision (e.g., ran off road, struck object) or what
occurred between two vehicles in a multi-vehicle collision (e.g.,
rear end, left turn across path, head on, right angle).
Rear End Collision When a vehicle collides with another vehicle in the rear side due
to a number of possible reasons (e.g., following too closely,
failure to maintain proper safe distance between two vehicles,
driver inattention, failing to account for road conditions).
Sideswipe Same Direction Two vehicles travelling in the same direction that are moving
alongside each other and collide; resulting in at least one of the
vehicles being struck on the side.
Sideswipe Opposite
Direction
Two vehicles approaching opposite directions and intending to
continue in opposite directions collide in a sideswiping manner
as a result of one or both vehicles crossing the painted or
unpainted centerline or divided median of the roadway.
Left Turn Across Path A driver makes a left turn and is struck by an oncoming vehicle
with the right of way.
Backing Any multi-vehicle collision when at least one vehicle was in the
act of backing.
Struck Object A collision in which the primary collision involved a single
vehicle and a fixed object.
Vulnerable Road User
Collision
A collision involving a vehicle that collides with either a
pedestrian, motorcyclist or bicyclist.
Vehicle Wildlife Collision A collision involving a vehicle striking any wildlife.
At-fault Driver A driver who is responsible for the collision due to faulty driver
action including following too closely, improper lane change,
speeding, careless driving, failing to yield right of way (ROW),
sign/signal violation, distracted driving.
St. Albert Traffic Collision Statistics, 2014 Page 5
2014 COLLISION QUICK FACTS
General Collision Statistics
768 collisions occurred on public roadways (incidents within private
parking lots excluded) within St. Albert
431 collisions (56% of total collisions) occurred at intersections
337 collisions (44% of total collisions) occurred at mid-block
locations
23% reduction of intersection collision occurrences from 2013
City-wide there was 10% collision reduction and 13% collision
reduction per 1,000 registered vehicles from 2013
City-wide there was 18% collision reduction per 1,000 population
from 2012
100% reduction of fatal collision occurrences, a 35% reduction of
injury collision occurrences and a 7% reduction of PDO collision
occurrences from 2013 on public roadways
Of the 124 injury collisions that occurred on public roadways, 4
resulted in major injuries and 166 resulted in minor injuries
a 56% motorcycle, 60% bicycle and 55% pedestrian collision
reduction on public roadways from 2013
Of at-fault drivers; 58% are male and 42% are female
Male drivers within 16-20 years of age are the highest male at-fault
drivers
Female drivers within 16-20 and 31-40 years of age are the highest
female at-fault drivers
Intersection Collision Statistics
77% of injury collisions occurred at intersections
The intersection of St. Albert Trail & Giroux/Boudreau Road has the
highest number of total collision occurrences
Approximately 49% of all intersection collisions involved rear end
collisions; 23% of those rear end collisions resulted in injuries
54% reduction in left turn across path collisions from 2013
70% of intersection collisions occurred on weekdays
34% of all intersection collisions occurred during fall (September,
October, November)
16% of total intersection collisions occurred in November
St. Albert Traffic Collision Statistics, 2014 Page 6
43% of rear end collisions that occurred during fall, occurred in
November – typical to when the first snowfall occurs
31% of intersection collisions occurred from 3 to 6 p.m.
Mid-block Collision Statistics
23% injury collisions occurred at the mid-block locations
46% of mid-block collisions occurred due to a vehicle colliding with
a parked car
19% of mid-block parked car related collisions occurred in the
Grandin neighbourhood
48% of mid-block collisions occurred mid-week (Wednesday,
Thursday, Friday)
32% of mid-block collisions occurred during winter (December,
January, February)
45% of mid-block collisions that occurred during winter, occurred in
February
18% of mid-block collisions occurred from 4 to 6 p.m.
Summary
Statistics 2013 2014 Change
Total Collisions 886 768 -13.3%
Fatal Collisions 5 0 -100%
Injury Collisions 192 124 -35.4%
PDO Collisions 689 644 -6.5%
Intersection Collisions 559 431 -23%
Mid-block Collisions 337 337 0.0%
Rear End Collisions 200 209 +5.0%
Left Turn Across Path Collisions 109 51 -53.2%
Pedestrian Collisions 11 5 -55%
Bicycle Collisions 5 2 -60%
Motorcycle Collisions 9 4 -56%
Vehicle- Wildlife Collisions 5 7 +40%
Number of Registered Vehicles 50424 51944 +3.0%
Number of Licensed Drivers 48423 49387 +2.0%
Note: Statistics of Collisions which occurred on public roadways
“-” indicates decrease “+” indicates increase
St. Albert Traffic Collision Statistics, 2014 Page 7
CHAPTER 1: INTRODUCTION
Background
This report provides a summary of motor vehicle collision incidents that were reported to
have occurred from January 1, 2014 to December 31, 2014 within St. Albert. The City of
St. Albert maintains a data file which contains all reportable collisions that occur on
roadways (both public and private roadways) in St. Albert. The information is collected
from the provincial report form, which is completed by members of the Royal Canadian
Mounted Police (RCMP) either on paper at the scene of the collision or electronically at
the front counter of a divisional or community police station. The database reflects all
reported collisions on public roadways that results in property damage of CAD $2,000 or
greater, as well as any collision that results in a major or minor injury or fatality. The
information presented in this report is based upon reportable incidents provided by
Alberta Transportation. The information provided within this report is produced based
upon collisions reported at the time of printing. Due to continuing police investigations,
some numbers presented in this report may be subject to revision.
Structure of the Report
Chapter 1 provides the background information of the report. In addition, an overview of
St. Albert’s location, road network, transit network, speed limits and playground zones,
and demographic information (including population, number of registered vehicles and
licensed drivers) have also been illustrated. The remainder of this report is organized
into the following chapters:
Chapter 2 discusses city-wide historical collision statistics and trends. This section of
the report contains overall collision trends which represent all collision occurrences
within the city on both public (intersection and mid-block) and private roadways (parking
lots).
Chapter 3 describes 2014 collision statistics and trends from incidents occurring on
public roadways only (i.e., intersections and mid-block); private roadway (parking lot)
information has been removed from this section of the report. Overall statistics on
various aspects of collision occurrences are identified inclusive of: types and severities,
highest collisions intersections, temporal distribution of collisions, collisions by
neighbourhoods, vulnerable road user incidents and vehicle-wildlife collisions.
Chapter 4 represents the information about the identified “at-fault” drivers, including age
distribution, sex and driver actions.
St. Albert Traffic Collision Statistics, 2014 Page 8
Geographical Location
St. Albert, the second-largest city in the Edmonton Capital Region with a population of
63,255 (density 1273.4 per km2
), is located north-west of the city of Edmonton, Alberta1
.
Figure 1 illustrates the geographic location of St. Albert.
Figure 1: Geographical Location of St. Albert
1
2014 St. Albert Census, Municipal Census Report, City of St. Albert
St. Albert Traffic Collision Statistics, 2014 Page 9
Roadway Network
Figure 2 illustrates the roadway network of St. Albert. The road network is comprised of
approximately 68.24 km of arterial roadway, 74.21 km of collector roadway and 162.92
km of local roadway. St. Albert Trail (also known as Highway 2) is the major north-south
arterial corridor and also connects to Edmonton at the south end. The Boudreau/Giroux
Road corridor is the major east-west arterial which links with St. Albert Trail and
connects the eastern and western sections of the city.
Figure 2: Road Network of St. Albert
St. Albert Traffic Collision Statistics, 2014 Page 10
Demographic Information
Population
The 2014 Municipal Census reported a population of 63,255 in St. Albert which
represents a growth of 3.7% from the 2012 census where the recorded population was
60,994 (Figure 3). The average annual growth rate over this period was 1.85%, which is
more than double the 0.71% average annual growth experienced between 2010 and
2012. The population growth rate for 2012 to 2014 is the highest growth rate since the
increase from the 2000 to the 2003 census period. The largest age category, which
represents 22.44% of the population, is between 50-64 years of age (mature adults)
(Figure 4). In 2014, the female population represented 51% of the overall population
while male was 49%2
.
Figure 3: Total Population of St. Albert
Figure 4: 2014 Population by Age of St. Albert
2
2014 St. Albert Census, Municipal Census Report, City of St. Albert
1997 1998 1999 2000 2001 2003 2005 2006 2008 2010 2011 2012 2014
Population 48,065 49,243 50,479 51,716 53,081 54,588 56,310 57,719 58,501 60,138 61,466 60,994 63,255
45,000
47,000
49,000
51,000
53,000
55,000
57,000
59,000
61,000
63,000
65,000
TotalPopulation
0 4 5 9 10 14 15 19 20 24 25 29 30 34 35 39 40 44 45 49 50 54 55 59 60 64 65 69 70 74 75 79 80 84 85+
2014 Population 2729 3848 3987 4289 3938 3094 3490 3702 4266 4350 4946 4595 3933 3225 2173 1410 1023 1039
0
1000
2000
3000
4000
5000
6000
Population
St. Albert Traffic Collision Statistics, 2014 Page 11
Registered Vehicles & Licensed Drivers
According to Alberta Transportation (AT), currently there are 51,9443
registered vehicles
and 49,3874
licensed drivers in St. Albert (Figure 5). For the registered motorized
vehicles, counts include all motorized vehicles that can be driven on the highway (as
defined by the Alberta Traffic Safety Act). However, trailers, off-highway vehicles, and
dealer-plated vehicles were excluded from the counts. In terms of licensed drivers,
counts include all classes of licensed drivers, including learner’s class and valid licenses
that have not expired. Counts do not include suspended drivers, ID card holders, or any
drivers with expired licenses.
In 2014, there was a 2% increase of licensed drivers, whereas a 3% increase of
registered vehicles from 2013. In term of car ownership per household, the ratio of
registered vehicles and occupied dwelling units was 2.24 (total dwelling units 23,168)
which indicates that every household has at least two registered vehicles. These
numbers act as indicators of a community’s car dependency and vehicle-centric priority.
Figure 5: Number of Registered Vehicles & Licensed Drivers of St. Albert
3
Vehicle Geographical Statistics, Alberta Transportation, Office of Traffic Safety
4
MOVES Operator Reports, Alberta Transportation, Office of Traffic Safety
2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
Registered Vehicles 44577 46297 48774 51332 52387 50529 49195 49572 50424 51944
Licensed Drivers 46249 46991 47985 48807 49818 48455 47740 47825 48423 49387
40000
42000
44000
46000
48000
50000
52000
54000
Number
St. Albert Traffic Collision Statistics, 2014 Page 12
Neighborhoods
There are a total of 24 neighborhoods in the city. As identified in Figure 6., St. Albert’s
most populated neighbourhoods are:
• Grandin at 11.7% of the total population
• Lacombe Park at 11.6% of the total population
• Deer Ridge at 9.9% of the total population
Since 2012, the neighbourhood with the highest population growth was North Ridge,
where there was an increase in population of 1,029 people. North Ridge was followed
by Erin Ridge North, with an increase of 498 people.
Figure 6: Population of St. Albert (2014) by Neighborhoods
St. Albert Traffic Collision Statistics, 2014 Page 13
Transit Network
The city runs St. Albert Transit (StAT) which has 15 local routes and 8 commuter routes
to Edmonton (Figure 7). Currently StAT operates 55 buses and the fleet travels a total
of 2.2 million kilometres and carries 1.25 million riders annually.
Figure 7: Transit Network of St. Albert
St. Albert Traffic Collision Statistics, 2014 Page 14
Speed Limits, School Zones, and Playground Zones
Similar to other municipalities, St. Albert utilizes school zones, which is an identified
section of road close to a school where the speed limit is reduced to 30 km/h and is in
effect on school days between the hours of 8 a.m. to 4 p.m.
The City also operates with both Playground Areas and Playground Zones. A
Playground Area is a location identifying a playground; however there is no reduction in
travel speed on the roadway. A Playground Zone operates with an identifiable speed
reduction to 30 km/h and is in effect starting at 8:30 a.m. and ending one hour after
sunset. With the exception of school and playground zones (during specified times), all
collector and local roads within St. Albert operate at 50 km/h unless otherwise posted.
Figure 8 identifies posted speed limits within the city.
Figure 8: Speed limits and School / Playground Zones of St. Albert Road Network
St. Albert Traffic Collision Statistics, 2014 Page 15
CHAPTER 2: HISTORICAL COLLISION STATISTICS
City-wide Collision Trends (inclusive of both Public and Private
Roads)
Figures 9 and 10 illustrate the city-wide total collision frequency and percentages of
collision frequency change from 2005 to 2014. City-wide collision frequency includes
collisions that occurred on public roadways (i.e., intersection and mid-block) and also in
private parking lots. Within the timeframe of 2005 to 2014, the highest number of
collisions was reported in 2009 (1,862 collisions), while the lowest number occurred in
2005 (1,067 reported collisions).
Over the past 10 years, the highest increase in
annual collision occurrence took place from 2006 to
2007 where there was a 21% increase in reported
collisions (Figure 10). In 2011, there were substantial
decreases recorded (approximately 18% reduction
from 2010; however, in 2011 the level of reporting
property damage only (PDO) collisions was adjusted
to CAD $2,000 from CAD $1,000 which may have led
to a higher percentage variance.
In comparison to 2013,
2014 recorded a
10%
Collision Reduction
city-wide
Several road safety initiatives/countermeasures have been implemented with the intent
of addressing and reducing collision occurrences, inclusive of:
• In 2001, red light cameras were first introduced at two intersections:
St. Albert Trail & Hebert Road/Gervais Road intersection
St. Albert Trail & McKenney Avenue/Bellerose Drive intersection
o Speed enforcement was added to the cameras in 2009, thus making
them intersection safety devices (ISDs) with enforcement occurring for
both red light violations and speed violations
o In 2013 intersection safety devices (ISDs) were implemented at the St.
Albert Trail & Giroux Road/Boudreau Road intersection.
• In 2014, protected only left turn signal phases were introduced at intersections
along the St. Albert Trail corridor. Protected only left turns now operate at 11 of
14 intersections along the corridor – for the high volume north and southbound
directions.
In 2014 (city-wide), there were 1,194 reported collisions which represent an overall 10%
collision reduction from 2013.
St. Albert Traffic Collision Statistics, 2014 Page 16
Figure 9: City-wide Historical Collision Incidents Reported (2005- 2014)
Figure 10: Percentage of Annual Collision Incidents Reported Change
* Change identified for the year is in comparison to the previous year
Figure 11 represents the annual collision frequency (number of occurrences) at
intersections, mid-block locations, and within parking lots from the year 2012 to 2014.
The distributions of collision occurrences at the various types of locations are quite
2006 2007 2008 2009 2010 2011 2012 2013 2014
Percentage of Change 19% 21% 4% 16% 7% 18% 1% 6% 10%
25%
20%
15%
10%
5%
0%
5%
10%
15%
20%
25%
PercentageofChange
St. Albert Traffic Collision Statistics, 2014 Page 17
similar. In 2014, there was a 23% reduction of intersection collision occurrences from
2013. During this period there was a substantial reduction of left turn across path
collisions at intersections along St. Albert Trail following the implementation of protected
only left turn signal phases.
2014 reported a
23%
Intersection
Collision
Reduction from
2013
Figure 11: 2012-2014 Collision Incidents by Location Type
For a better understanding of city-wide collision trends, it is important to take into
account city population or registered vehicles as a proxy for exposure or risk of collision
occurrence. This is achieved by considering the collision occurrences per 1,000
population rather than simple collision frequency. Figure 12 identifies the annual
collision rates per 1,000 population in St. Albert from 2005 to 2014.
From 2005 to 2010 there was an increasing trend in collision rates which led to the
highest recorded collision rate within this time frame, of 28.88% in 2010. In 2011 the
rate decreased 19.9% from 2010; however, it remained fairly constant in the years 2011
and 2012. An 18% reduction of collision per 1,000 population occurred in 2014 from
2012 (Figure 12).
Figure 13 represents the reduction of collisions per 1,000 registered vehicles in the
same time frame. In 2014 there was a 13% reduction of collisions per 1,000 registered
vehicles in St. Albert from the previous year.
Intersection Midblock Parking Lot
2012 581 406 420
2013 559 337 431
2014 431 337 426
0
100
200
300
400
500
600
700
CollisionFrequency
St. Albert Traffic Collision Statistics, 2014 Page 18
18%
Reduction of
Collision per
1,000
Population
from 2012 to
2014
Figure 12:Collision per 1,000 Population of St. Albert
* No population survey was conducted in 2013
13%
Reduction of
Collision per
1,000
Registered
Vehicles from
2013
Figure 13:Collision per 1,000 Registered Vehicles of St. Albert
2005 2006 2008 2010 2011 2012 2014
Collision Rate 18.95 22.09 27.54 28.88 23.13 23.07 18.88
0
5
10
15
20
25
30
35
Collisionper1000Population
2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
Collision Rate 23.94 27.54 31.74 31.38 35.54 34.38 28.91 28.38 26.32 22.99
0
5
10
15
20
25
30
35
40
Collisionper1000RegisteredVehicle
St. Albert Traffic Collision Statistics, 2014 Page 19
CHAPTER 3: 2014 COLLISION STATISTICS ON PUBLIC
ROADWAYS
Collision Trends on Public Roadways
This section discusses reported collision occurrences, severities and trends that
occurred only on public roadways (i.e., intersections and mid-blocks) and excludes all
collisions that concurred in private parking lots. There were no fatal collision
occurrences in 2014 on public roadways, which indicate a 100% reduction of fatal
collisions from 2013 (Figure 14). Overall, there was a 35% and 7% reduction of injury
and PDO collision occurrences respectively from 2013.
100% Reduction
of Fatal Collisions
35% Reduction of
Injury Collisions
7% Reduction of
PDO Collisions from
2013
Figure 14: Collision Occurrences (2012- 2014) in Public Roadways by Severity
Fatality Injury
Property Damage
Only
2012 1 146 837
2013 5 192 689
2014 124 644
0
100
200
300
400
500
600
700
800
900
CollisionFrequency
St. Albert Traffic Collision Statistics, 2014 Page 20
Figure 15: Registered Vehicle, Licensed Drivers and Collision Frequency Trend
Figure 15 depicts the registered vehicle, licensed drivers, and collision frequency trend
from 2012 to 2014. Although the number of registered vehicles and licensed drivers
increased over the past few years, collision occurrences have decreased from 2012 to
2014.
Overview
In 2014, there were 768 total collisions that occurred on public roadways (private
parking lot incidents excluded). Based on the location of collision occurrences, public
roadways can be divided into two locations:
i) intersection locations
ii) mid-block locations
Figure 16 represents the 2014 collision occurrences by location and severity.
Approximately 56% of total collisions occurred at intersections, whereas 44% occurred
at mid-block locations.
600
650
700
750
800
850
900
950
1000
47500
48000
48500
49000
49500
50000
50500
51000
51500
52000
52500
2011 2012 2013 2014 2015
CollisionFrequency
Number
Year
RegisteredVehicle
Licensed Drivers
CollisionFrequency
St. Albert Traffic Collision Statistics, 2014 Page 21
0 Fatal Collision
occurred in public roadways
77% Injury Collision
occurred at the
Intersection
124 Injury Collisions
resulted in 4 major injuries
and 166 minor injuries to
road users
Figure 16: Distribution of Collision Occurrences by Location and Severity
There were no fatality resulting collision
occurrences in 2014.
There were 124 total injury collisions reported:
28 occurrences at mid-block locations and 96
occurrences at intersection locations.
Of these 124 collisions that resulted in injuries:
• 4 road users reported major injuries as a
result of an incident
• 166 road users reported minor injuries
as a result of an incident
In summary, the 124 injury collisions resulted in
a total of 170 road users with major or minor
injuries (multiple vehicle occupants or road
users may be injured in a single reported
collision incident).
St. Albert Traffic Collision Statistics, 2014 Page 22
Intersection Collisions
Intersections are the most collision prone locations in the road network due to the
interaction of multiple road users and the different directional vehicular/pedestrian
movements that result in conflicting points. For instance, in a 4-leg intersection there are
32 conflict points and in a 3-leg intersection (T-intersection) there are 9 conflicts points.
In 2014, 56% of the total collisions that occurred on public roadways occurred at
intersections. In terms of severity, 77% of injury collisions occurred at intersections.
Figure 17 illustrates the density of intersection collision incidents which identifies that
most reported collisions occurred along the St. Albert Trail and Boudreau Road
corridors.
St. Albert Trail and
Boudreau Road are the
two major arterials
where traffic volume is
significantly higher
compared to other
arterials within the city.
Previous traffic safety
research has shown
that there is a
relationship between
collision occurrence and
traffic volume – as
traffic volumes increase;
vehicle collision
frequency increases.
Figure 17: 2014 Intersection Collision Density
St. Albert Traffic Collision Statistics, 2014 Page 23
St. Albert Trail &
Giroux/ Boudreau
Road
Ranked One as High
Collision Intersection based
upon collision frequency
Table 1: 2014 Top Ten High Collision Intersections
Rank Intersection Name Collision Frequency
1 St. Albert Trail & Giroux/Boudreau Road 30
2 St. Albert Trail & McKenney Avenue/Bellerose Drive 27
3 Boudreau Road & Bellerose Drive 25
3 St. Albert Trail & Villeneuve/Erin Ridge Road 25
4 St. Albert Trail & Hebert /Gervais Road 19
5 St. Albert Trail & St. Anne Street/Sturgeon Road 16
6 Boudreau Road & Campbell Road 14
7 Ray Gibbon Drive & LeClair Way 11
7 St. Albert Trail & Lennox/Inglewood Drive 11
7 St. Albert Trail & Gate Avenue 11
Table 2: 2013 Top Ten High Collision Intersections
Rank Intersection Name Total Collision Frequency
1 St. Albert Trail & Giroux/Boudreau Road 55
2 St. Albert Trail & Hebert /Gervais Road 42
3 St. Albert Trail & Villeneuve/Erin Ridge Road 25
4 Boudreau Road & Bellerose Drive 23
4 Boudreau Road & Campbell Road 23
5 St. Albert Trail & St. Vital Avenue/Rivercrest Crescent 21
6 St. Albert Trail & McKenney Avenue/Bellerose Drive 19
6 St. Albert Trail & St. Anne Street/Sturgeon Road 19
7 St. Albert Trail & Gate Avenue 12
8 Boudreau Rd & Sir Winston Churchill Avenue 11
Table 1 and Figure 18 represent the ten highest
collision intersections based on total collision
frequency in 2014. Seven out of the top 10
identified intersections are on the St. Albert Trail
corridor. In 2014, the intersection of St. Albert Trail
and Giroux Road/Boudreau Road was ranked the
highest in collision frequency occurrences with 30
collisions. This is the second year, the road has
received this distinction. However, there was a
45.5% reduction of collisions at this intersection
compared to 2013. St. Albert Trail and McKenney
Avenue/ Bellerose Drive ranked second in the
collision frequency ranking followed by the
intersection of Boudreau Road and Bellerose Drive.
For an annual comparison, Table 2 identifies the
ten highest collision intersections reported in 2013.
St. Albert Traffic Collision Statistics, 2014 Page 24
Figure 18: 2014 Top Ten Collision Intersections
Note – The number identifies the intersection ranking for collision frequency
St. Albert Traffic Collision Statistics, 2014 Page 25
49% of Intersection
Collisions involved
Rear End
Collisions
23%
Rear End
Collisions resulted in
Injuries
Left Turn
Across Path
Collisions Significantly
Decreased (54%)
from 2013
Figure 19: Intersection Collisions by Severities and Types
0 20 40 60 80 100 120 140 160 180
Backing
Bicycle Involved
Head On
Left Turn Across Path
Off Road Left
Pedestrian Involved
Rear End
Right Angle
Side Swipe Same Direction
Struck Object
Backing
Head On
Hit and Run
Left Turn Across Path
Off Road Left
Off Road Right
Passing Left Turn
Passing Right Turn
Rear End
Right Angle
Side Swipe Opposite Direction
Side Swipe Same Direction
Struck Object
InjuryPDO
Intersection
Collision Frequency
St. Albert Traffic Collision Statistics, 2014
Temporal Distribution of Intersection Collision Occurrences
Figure 20: Intersection Collision Occurrences by Day of the Week and Types
Thursday
15%
Friday
17%
Saturday
18%
0 5
Backing
Bicycle Involved
Head On
Hit and Run
Left Turn Across Path
Off Road Left
Off Road Right
Passing Left Turn
Passing Right Turn
Pedestrian Involved
Rear End
Right Angle
Side Swipe Opposite Direction
Side Swipe Same Direction
Struck Object
Intersection
Saturday Friday Thursday Wednesday
Intersection Collisions
Occurred on
Weekdays
Rear End
Collisions Occurred on
Weekdays
Left Turn Across
Collisions Occurred on
Weekdays
Temporal Distribution of Intersection Collision Occurrences
Intersection Collision Occurrences by Day of the Week and Types
Sunday
12%
Monday
8%
Tuesday
15%
Wednesday
15%
10 15 20 25 30 35 40 45
Collision Frequency
Wednesday Tuesday Monday Sunday
Page 26
70%
Intersection Collisions
Occurred on
Weekdays
74%
Rear End
Collisions Occurred on
Weekdays
79%
Left Turn Across
Path
Collisions Occurred on
Weekdays
Intersection Collision Occurrences by Day of the Week and Types
St. Albert Traffic Collision Statistics, 2014 Page 27
34%
Injury Collisions
Occurred during
Weekends
24%
Injury Collisions
Occurred on
Saturday
Figure 21: Intersection Collision Occurrences by Day of the Week and Severity
0 10 20 30 40 50 60
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Intersection
Intersection
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
PDO 39 31 48 57 53 55 52
Injury 10 5 18 9 12 19 23
Figure 21 identifies intersection collision occurrences
by day of the week and severity. In 2014,
approximately 77% of injury collisions occurred at
intersections; of which 34% of these injury collisions
occurred during weekends. Approximately 24% of
collisions that resulted in major or minor injuries
occurred on a Saturday.
St. Albert Traffic Collision Statistics, 2014
Figure 22: Intersection Collision Occurrences by Month of the Year and Seasons
5
El-Basyouny,K., Barua, S., & Islam, T., (2014),
using full Bayesian multivariate Poisson lognormal models
91-99.
Spring
19%
Summer
22%
Winter
25%
September October November
Fall
Total 42 40 67
0
10
20
30
40
50
60
70
80
CollisionFrequency
Figure 22 represents intersection collision occurrences
by month and season. It shows approximately 34% of
collisions occurred during fall months
(September/October/November). However, from the
2014 monthly collision distribution, it shows that 16% of
total intersection collisions occurred in
alone; this may be caused by a change in
conditions due to weather. Previous research
shown that the onset of snow
number of collisions5
.
Highest frequency of
Intersection Collisions
Occurred during
Fall (September
/October /
November
Intersection Collisions
that Occurred during Fall
Occurred in
November
Intersection Collision Occurrences by Month of the Year and Seasons
Basyouny,K., Barua, S., & Islam, T., (2014), Investigation of time and weather effects on crash types
using full Bayesian multivariate Poisson lognormal models, Accident Analysis and Prevention, Vol. 73, pp.
Fall
34%
Spring
19%
March April May June July August January
Spring Summer
Intersection
35 21 26 26 32 35 34
intersection collision occurrences
by month and season. It shows approximately 34% of
collisions occurred during fall months
(September/October/November). However, from the
2014 monthly collision distribution, it shows that 16% of
ions occurred in November
alone; this may be caused by a change in road
due to weather. Previous research has also
onset of snow correlates with the
Page 28
Highest frequency of
Intersection Collisions
Occurred during
(September
/October /
November
45%
Intersection Collisions
that Occurred during Fall
Occurred in
November
Intersection Collision Occurrences by Month of the Year and Seasons
Investigation of time and weather effects on crash types
, Accident Analysis and Prevention, Vol. 73, pp.
January February December
Winter
34 34 39
St. Albert Traffic Collision Statistics, 2014 Page 29
43%
Rear End Collisions that
Occurred during Fall
Occurred in
November
when the snowfall starts
In 2014, the Capital Region area experienced its first snow fall on September 8;
however a more lasting seasonal change and snowfall occured in the first weeks of
November .
Figure 23: Intersection Collision Occurrences by Collision Types and Seasons
6
El-Basyouny, K., Barua, S., Islam, T., & Li, R, (2014), Assessing the effect of weather states on crash
severity and type by use of Full Bayesian multivariate safety models, Transportation Research Record:
Journal of Transportation Research Board, No. 2432, pp. 65-73.
0 10 20 30 40 50 60 70 80
Backing
Bicycle Involved
Head On
Hit and Run
Left Turn Across Path
Off Road Left
Off Road Right
Passing Left Turn
Passing Right Turn
Pedestrian Involved
Rear End
Right Angle
Side Swipe Opposite Direction
Side Swipe Same Direction
Struck Object
Intersection
Collision Frequency
Winter Summer Spring Fall
Figure 23 illustrates intersection collision occurrences
by collision types and seasons. Previous research
has shown that major snow events following dry
weather increases the number of rear end collisions6
which can also be seen in Figure 23. It identifies that
35% of rear end collisions occurred during fall.
Approximately 43% of these rear end collisions in fall
took place in November when snow fell and stayed.
St. Albert Traffic Collision Statistics, 2014 Page 30
31%
Intersection Collisions
Occurred from
3:00 PM- 6:00PM
Figure 24: Intersection Collision Occurrences by Time of the Day
0 1 1 2 2 3 4 5 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24
Collision Frequency 2 4 1 3 9 24 19 24 24 31 41 16 14 39 49 47 26 22 12 12 5 3
0
10
20
30
40
50
60CollisionFrequency
Figure 24 illustrates intersection collision occurrences
by time of the day. Similar to 2013, the afternoon
rush hour period from 3:00 to 6:00 p.m. (reaching a
peak collision period around 4:00 to 5:00 p.m.)
accounted for the highest proportion (31%) of
intersection collisions in 2014. The least collision
occurrences occurred in the early morning (2:00 to
6:00 a.m.).
St. Albert Traffic Collision Statistics, 2014 Page 31
Mid-block Collisions
In 2014, 44% of the total
collisions occurred at
mid-block locations.
Figure 25 illustrates the
density of mid-block
collision occurrences
which indicates the
majority occurred along
the St. Albert Trail
corridor. Due to high
traffic volumes and
commercial access point
density (high number of
access and exit points on
to the roadway), collision
densities along St. Albert
Trail are substantially
high.
Figure 25 : Mid-block Collision Density (2014) of St. Albert
Figure 25 also shows a high concentration of mid-block collisions along Perron Street. It
should be noted that the density distribution and identification of “hot spots” is relative to
the overall distribution of occurrences throughout the city. 2014 Collision statistics
identified three mid-block collision occurrences on Perron Street; however, as those
three collisions occurred within a very small road segment of Perron Street, the density
becomes high compared to other road segments where the collisions were very
segregated. Two of the three mid-block collisions on Perron Street occurred due to
unsafe backing and the remaining one was a hit and run of a parked car.
St. Albert Traffic Collision Statistics, 2014 Page 32
23%
Mid-block Collisions
caused by
Struck a Object
15%
Mid-block Collisions
occurred because of
Sideswipe in
Same Direction
8%
Mid-block Collisions
resulted in
Injuries
Figure 26: Mid-block Collisions by Severities and Types
In 2014, 18% of mid-block collisions occurred due to backing from a residential
driveway. Approximately 46% of the mid-block collisions occurred due to a vehicle
striking a parked vehicle (Figure 27). Most incidents involving parked vehicles occurred
in Grandin, where the population density is high (Figure 28).
0 10 20 30 40 50 60 70 80
Backing
Off Road Right
Rear End
Right Angle
Side Swipe Opposite Direction
Struck Object
Backing
Head On
Hit and Run
Left Turn Across Path
Off Road Left
Off Road Right
Others
Passing Left Turn
Passing Right Turn
Pedestrian Involved
Rear End
Right Angle
Side Swipe Opposite Direction
Side Swipe Same Direction
Struck Object
InjuryPDO
Midblock
Collision Frequency
St. Albert Traffic Collision Statistics, 2014
Figure 27: Mid-block Collision Distribution Related to Parked Cars
Figure 28: Neighbourhood with Frequency of Occurrence of Parked Car Related
Collisions
Others
54%
0 5
Inglewood
Erin Ridge North
Downtown
Campbell
Pineview
Heritage Lakes
Oakmont
Forest Lawn
Braeside
Mission
Kingswood
North Ridge
Woodlands
Akinsdale
Sturgeon
Lacombe
Erin Ridge
Deer Ridge
Grandin
46%
Mid-block Collisions
involved a
parked car
19%
of Mid-block Parked
Car related Collisions
occurred in
Grandin
block Collision Distribution Related to Parked Cars
Neighbourhood with Frequency of Occurrence of Parked Car Related
Parked Car
Related
46%
10 15 20 25
Page 33
46%
block Collisions
involved a
ar being hit
19%
block Parked
Car related Collisions
occurred in
Grandin
Neighbourhood with Frequency of Occurrence of Parked Car Related
30 35
St. Albert Traffic Collision Statistics, 2014
Temporal Distribution of Mid
Figure 29: Mid-block Collision Occurrences by Day of the Week and Types
Wednesday
Thursday
16%
Friday
16%
Saturday
14%
0
Backing
Head On
Hit and Run
Left Turn Across Path
Off Road Left
Off Road Right
Others
Passing Left Turn
Passing Right Turn
Pedestrian Involved
Rear End
Right Angle
Side Swipe Opposite Direction
Side Swipe Same Direction
Struck Object
Midblock
Saturday Friday Thursday
74%
Of Mid-block Collisions
Occurred on
Weekdays
83%
Rear End
Collisions Occurred on
Weekdays
Temporal Distribution of Mid-block Collision Occurrences
block Collision Occurrences by Day of the Week and Types
Sunday
12%
Monday
14%
Tuesday
12%
Wednesday
16%
2 4 6 8 10 12 14 16
Collision Frequency
Thursday Wednesday Tuesday Monday Sunday
Page 34
74%
block Collisions
Occurred on
Weekdays
83%
Rear End
Collisions Occurred on
Weekdays
block Collision Occurrences by Day of the Week and Types
18
St. Albert Traffic Collision Statistics, 2014 Page 35
79%
Mid-block Injury
Resulting Collisions
Occurred on
Weekdays
24%
Mid-block Injury
Resulting Collisions
Occurred on a
Saturday
Figure 30: Mid-block Collision Occurrences by Day of the Week and Severity
0 10 20 30 40 50 60
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Midblock
Mid block
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
PDO 36 45 35 51 49 48 45
Injury 3 1 6 3 6 6 3
In 2014, 79% of mid-block injury collisions occurred
during weekdays. Figure 30 exhibits mid-block
collision occurrences by day of the week and severity.
It shows that approximately 64% of collisions that
resulted in major or minor injuries occurred on a
Tuesday, Thursday or Friday. In terms of PDO
collisions, 74% of mid-block PDO collisions occurred
during weekdays.
St. Albert Traffic Collision Statistics, 2014
Figure 31: Mid-block Collision Occurrences by Month of the Year and Seasons
Summer
22%
Winter
32%
September October November
Fall
Total 21 33 38
0
10
20
30
40
50
60
CollisionFrequency
Figure 31 represents mid-block collision
by month of the year and season. It shows
approximately 32% of collisions occurred during winter
months. From the monthly collision distribution it shows
that about 15% of total mid-block collisions occurred in
February. Further, about 45% of a
occurred during winter, took place in February. Heavy
snowfall, extreme weather conditions, and slippery road
surface conditions may be some of the contributing
factors of these collisions.
32%
Mid-block Collisions
Occurred during
Winter
(December/ January /
February)
45%
Mid-block Collisions that
Occurred
Occurred in
February
block Collision Occurrences by Month of the Year and Seasons
Fall
27%
Spring
19%
March April May June July August
Spring Summer
Mid block
26 19 20 25 19 28
block collision occurrences
by month of the year and season. It shows
approximately 32% of collisions occurred during winter
months. From the monthly collision distribution it shows
block collisions occurred in
February. Further, about 45% of all collisions that
occurred during winter, took place in February. Heavy
snowfall, extreme weather conditions, and slippery road
surface conditions may be some of the contributing
Page 36
32%
block Collisions
Occurred during
Winter months
mber/ January /
February)
45%
block Collisions that
Occurred during Winter,
Occurred in
February
block Collision Occurrences by Month of the Year and Seasons
January February December
Winter
27 49 32
St. Albert Traffic Collision Statistics, 2014 Page 37
57%
Struck Object Collisions
that Occurred during fall
Occurred in the month
of
November,
when road conditions
typically change for the
season
Figure 32: Mid-block Collision Occurrences by Collision Types and Seasons
7
El-Basyouny, K., Barua, S., Islam, T., & Li, R, (2014), Assessing the effect of weather states on crash
severity and type by use of Full Bayesian multivariate safety models, Transportation Research Record:
Journal of Transportation Research Board, No. 2432, pp. 65-73.
0 5 10 15 20 25 30 35
Backing
Head On
Hit and Run
Left Turn Across Path
Off Road Left
Off Road Right
Others
Passing Left Turn
Passing Right Turn
Pedestrian Involved
Rear End
Right Angle
Side Swipe Opposite Direction
Side Swipe Same Direction
Struck Object
Midblock Winter Summer Spring Fall
Figure 32 illustrates mid-block collision occurrences by
collision types and seasons. Previous research has
shown that major snow events, following dry weather,
increases the number of struck parked vehicle
collisions7
, which can also be seen in Figure 32. It
shows that a high proportion of struck object collisions
occurred during winter and fall and 57% of those
collisions that occurred during fall, happened in
November when typically heavier snowfalls occur and
these type of road conditions become more permanent
for the season creating icy and slippery conditions.
Further, approximately 32% of collisions due to
backing took place during the winter, and 90% of those
collisions occurred due to a vehicle striking a parked
car while backing.
St. Albert Traffic Collision Statistics, 2014 Page 38
18%
Mid-block Collisions
Occurred from
4:00 PM- 6:00PM
Figure 33: Mid-block Collision Occurrences by Time of the Day
0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24
Collision Frequency 5 3 1 2 1 4 11 23 10 15 19 26 24 14 15 20 25 34 23 16 6 6 10 8
0
5
10
15
20
25
30
35
40
CollisionFrequency
Figure 33 illustrates mid-block collision occurrences
by time of the day. Similar to intersection collisions,
the afternoon rush hour period from 4 to 6 p.m.
(reaching a peak collision period around 5 - 6 p.m.)
accounted for the highest proportion (18%) of mid-
block collisions. The least collisions occurred in the
early morning (2 - 5 a.m.).
St. Albert Traffic Collision Statistics, 2014 Page 39
14%
of Total Collisions
Occurred in
Grandin
Collision by Neighbourhoods
Figure 34: Collision Frequency of Occurrences by Neighbourhoods
0 5 10 15 20 25 30 35 40 45 50
Riverside
Riel
Erin Ridge North
Inglewood
Braeside
Oakmont
Forest Lawn
Kingswood
North Ridge
Downtown
Campbell
Heritage Lakes
Woodlands
Sturgeon
Pineview
Lacombe
Akinsdale
Mission
Erin Ridge
Deer Ridge
Grandin
Collision Frequency
Figure 34 illustrates collision occurrences by
neighbourhoods. In 2014, the highest volume of
collisions occurred in Grandin (14%) followed by
Deer Ridge and Erin Ridge.
These results are intuitive as Grandin is one of the
most populated neighbourhoods and the increase of
exposure (population) increases potential risk of
collisions. To account for the population densities,
collision per 1,000 population has also been
determined (Figure 35) for the neighbourhoods. It
shows that Downtown has the highest collision rate
followed by Mission. The
St. Albert Traffic Collision Statistics, 2014 Page 40
population density of the downtown area is quite low; however, it’s high traffic volume (
destination from commercial and event locations and occurrences) results in a high
collision rate for St. Albert’s Downtown.
Figure 35: Collision per 1,000 Populations of Neighbourhoods in St. Albert
St. Albert Traffic Collision Statistics, 2014 Page 41
56%
Reduction of
Motorcycle
Collision incidents
60%
Reduction of
Bicycle Collision
incidents
55%
Reduction of
Pedestrian
Collision incidents
Vulnerable Road User Collisions
Figure 36: 2012 - 2014 Vulnerable Road User Collisions with Severity
0 1 2 3 4 5 6 7 8
Injury
PDO
Fatality
Injury
PDO
Fatality
Injury
PDO
BicycleMotorcyclePedestrian
Bicycle Motorcycle Pedestrian
Injury PDO Fatality Injury PDO Fatality Injury PDO
2014 2 1 3 4 1
2013 4 1 1 4 4 3 7 1
2012 4 1 5 5 6 3
Figure 36 exhibits the 2012
to 2014 vulnerable road user
collision occurrences and
severity on public roadways.
In 2014, there was a 56%,
60% and 55% reduction of
motorcycle, bicycle and
pedestrian collisions
respectively, compared to
2013.
Figure 37 shows the location
of vulnerable road user
collision occurrences in
2014.
Bicycle Motorcycle Pedestrian
2012 5 10 9
2013 5 9 11
2014 2 4 5
0
2
4
6
8
10
12
CollisionFrequency
St. Albert Traffic Collision Statistics, 2014 Page 42
Figure 37: Vulnerable Road User Collision Occurrence Locations
St. Albert Traffic Collision Statistics, 2014 Page 43
Vehicle Wildlife Collisions
In 2014, 7 motor vehicle collisions occurred that involved wildlife (Figure 38). In 2013, 5
incidents occurred and in 2012, 6 incidents took place between vehicles and wildlife. Of
these 7 occurrences, one incident involved a vehicle striking a moose, while the rest
involved motor vehicles striking deer. Severity of these incidents: two collisions resulted
in minor injuries; five incidents resulted in property damage only.
Figure 38: Vehicle Wildlife Collision Occurrence Locations
St. Albert Traffic Collision Statistics, 2014
CHAPTER 4: AT FAULT DRIVER’S INFOR
Figure 39: Age and Gender Distribution of At
Male
58%
16 20
21 25
26 30
31 35
36 40
41 45
46 50
51 55
56 60
61 65
66 70
71 75
76 80
81 85
86 90+
16 20
21 25
26 30
31 35
36 40
41 45
46 50
51 55
56 60
61 65
66 70
71 75
76 80
81 85
86 90+
FemaleMale
0 10 20 30
58%
At-Fault Drivers are
Male
Aged 16-20 years
of Male Drivers are the
Most
At-Fault Drivers
Aged 16-20 & 31
years
of Female Drivers are the
Most
At-Fault Drivers
The age group
16 – 20
Represents only
7%
of the population
FAULT DRIVER’S INFORMATION
Age and Gender Distribution of At-Fault Drivers in St. Albert
Female
42%
40 50 60
Page 44
58%
Fault Drivers are
Male
20 years
of Male Drivers are the
Most
Fault Drivers
20 & 31-40
years
of Female Drivers are the
Most
Fault Drivers
The age group
20
epresents only
7%
of the population
St. Albert Traffic Collision Statistics, 2014 Page 45
Driver Actions of
At-Fault
Drivers are similar for
Male & Female Drivers
Most of the Collisions
occurred due to
Following Too Closely
&
Backing Unsafely
Figure 40: Driver Action of At-Fault Drivers by Gender in St. Albert
Backed Unsafely
Careless Driving
Disobey Traffic Signal
Distracted Driving
Driving Wrong Way
Fail To Ascertain
Failed to yield ROW
Followed Too Closely
Improper Lane Change
Improper Parking
Improper Passing
Improper Turn
Left Turn Across Path
Ran off road
Stop Sign Violation
Yield Sign Violation
0 20 40 60 80 100 120
Frequency
Male Female
St. Albert Traffic Collision Statistics, 2014 Page 46
Figure 41 demonstrates the at-fault drivers’ residence by neighbourhoods. It shows that
most of the at-fault drivers reside in Grandin, Lacombe Park and Deer Ridge. Further,
Figure 39 indicates 16-20 year old male and female drivers are the most at-fault drivers
which is only 7% of the total population.From these information, the city authority can
target these neighbourhoods for young driver education and design a driver education
program to correct poor driving habits.
Figure 41: At-Fault Drivers’ Residence by Neighbourhoods of St. Albert
St. Albert Traffic Collision Statistics, 2014 Page 47
Contacting the City
For questions regarding motor vehicle collision statistical analysis, process or details, or
to report concerns related to traffic safety within the City of St. Albert; please contact the
City Engineering Services Department at 780-459-1654 or the Manager of
Transportation as per contact information below.
Dean SchickDean SchickDean SchickDean Schick C.E.T
Manager of Transportation
Engineering Services | City of St. Albert
5 St. Anne Street | St. Albert, AB | T8N 3Z9
P: 780-459-1649 | F: 780-458-1974
dschick@stalbert.ca | www.stalbert.ca

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Collision_Report_2014_Final_web

  • 1. St. Albert Traffic Collision Statistics, 2014 Page 1 St. Albert Traffic Collision Statistics 2014 Transportation Branch Engineering Services City of St. Albert
  • 2. St. Albert Traffic Collision Statistics, 2014 Page 2 TABLE OF CONTENTS Glossary of Terms......................................................................................................... 3 2014 Collision Quick Facts........................................................................................... 5 Chapter 1: Introduction................................................................................................. 7 Background ................................................................................................................. 7 Structure of the Report ................................................................................................ 7 Geographical Location................................................................................................. 8 Roadway Network........................................................................................................ 9 Demographic Information .......................................................................................... 10 Population.............................................................................................................. 10 Registered Vehicles & Licensed Drivers ................................................................ 11 Neighborhoods .......................................................................................................... 12 Transit Network.......................................................................................................... 13 Speed Limits, School Zones, and Playground Zones ................................................ 14 Chapter 2: Historical Collision Statistics .................................................................. 15 City-wide Collision Trends (inclusive of both Public and Private Roads) ................... 15 Chapter 3: 2014 Collision Statistics on Public Roadways....................................... 19 Collision Trends on Public Roadways........................................................................ 19 Overview.................................................................................................................... 20 Intersection Collisions................................................................................................ 22 Temporal Distribution of Intersection Collision Occurrences.................................. 26 Mid-block Collisions................................................................................................... 31 Temporal Distribution of Mid-block Collision Occurrences..................................... 34 Collision by Neighbourhoods..................................................................................... 39 Vulnerable Road User Collisions ............................................................................... 41 Vehicle Wildlife Collisions.......................................................................................... 43 chapter 4: At-Fault Driver’s Information.................................................................... 44
  • 3. St. Albert Traffic Collision Statistics, 2014 Page 3 GLOSSARY OF TERMS Reportable Collision A vehicle collision that occurs on a public roadway or private parking lot and results in death, injury and/or property damage exceeding CAD $2,000. Collision A motor vehicle collision occurs when a vehicle, as defined by the Alberta Traffic Safety Act, comes in contact or collides with another vehicle, pedestrian, cyclist, animal, road infrastructure or debris. Royal Canadian Mounted Police (RCMP) report on collisions occurring on public roadways, alleys, private and public parking lots within the City of St. Albert’s jurisdiction. Current legislation in Alberta requires a traffic collision be immediately reported to the police if it results in death, injury or property damage of $2,000 or more. Fatality A fatality is the death of a person that occurs as a result of a motor vehicle collision within 30 days of the collision. Major Injury Persons with injuries or complaints of pain who went to a hospital and were subsequently admitted, even if for observation only. Minor Injury Persons with injuries or complaints of pain that went to a hospital and were treated in emergency (or refused treatment), but were not admitted to the hospital. This also includes people who indicated that they would seek medical treatment. Fatal Collision A vehicle collision which resulted in a fatality. Injury Collision A vehicle collision which resulted in either a major or minor injury. Property Damage Only (PDO) Collision A vehicle collision which resulted in property damage exceeding CAD $2,000. Collision Severity A classification of a collision based on the most severe result of the collision, i.e., whether someone was killed (fatal), injured (injury) or property damage (PDO) occurred. Public Roadways For the purposes of reportable collisions, a roadway means any primary highway, secondary highway, rural road, street, avenue, parkway, alley, bridge where the public is ordinarily permitted to drive or park a vehicle (with certain rules and restrictions). Roadways are inclusive of sidewalks, boulevards and districts adjacent to and parallel with the roadway. Intersection Defined as extending 10 metres past the legally defined limits of the outer crosswalk lines of an intersecting roadway.
  • 4. St. Albert Traffic Collision Statistics, 2014 Page 4 Mid-block A section of roadway between two intersections. Driver Action A category of contributing factors attributed to actions taken or performed by a driver immediately prior to a collision occurring. Collision Type Refers to the object struck by a motor vehicle during a collision (including: a pedestrian, a motorcycle, a bicycle, an animal and fixed object); or to what happened to the vehicle in a single vehicle collision (e.g., ran off road, struck object) or what occurred between two vehicles in a multi-vehicle collision (e.g., rear end, left turn across path, head on, right angle). Rear End Collision When a vehicle collides with another vehicle in the rear side due to a number of possible reasons (e.g., following too closely, failure to maintain proper safe distance between two vehicles, driver inattention, failing to account for road conditions). Sideswipe Same Direction Two vehicles travelling in the same direction that are moving alongside each other and collide; resulting in at least one of the vehicles being struck on the side. Sideswipe Opposite Direction Two vehicles approaching opposite directions and intending to continue in opposite directions collide in a sideswiping manner as a result of one or both vehicles crossing the painted or unpainted centerline or divided median of the roadway. Left Turn Across Path A driver makes a left turn and is struck by an oncoming vehicle with the right of way. Backing Any multi-vehicle collision when at least one vehicle was in the act of backing. Struck Object A collision in which the primary collision involved a single vehicle and a fixed object. Vulnerable Road User Collision A collision involving a vehicle that collides with either a pedestrian, motorcyclist or bicyclist. Vehicle Wildlife Collision A collision involving a vehicle striking any wildlife. At-fault Driver A driver who is responsible for the collision due to faulty driver action including following too closely, improper lane change, speeding, careless driving, failing to yield right of way (ROW), sign/signal violation, distracted driving.
  • 5. St. Albert Traffic Collision Statistics, 2014 Page 5 2014 COLLISION QUICK FACTS General Collision Statistics 768 collisions occurred on public roadways (incidents within private parking lots excluded) within St. Albert 431 collisions (56% of total collisions) occurred at intersections 337 collisions (44% of total collisions) occurred at mid-block locations 23% reduction of intersection collision occurrences from 2013 City-wide there was 10% collision reduction and 13% collision reduction per 1,000 registered vehicles from 2013 City-wide there was 18% collision reduction per 1,000 population from 2012 100% reduction of fatal collision occurrences, a 35% reduction of injury collision occurrences and a 7% reduction of PDO collision occurrences from 2013 on public roadways Of the 124 injury collisions that occurred on public roadways, 4 resulted in major injuries and 166 resulted in minor injuries a 56% motorcycle, 60% bicycle and 55% pedestrian collision reduction on public roadways from 2013 Of at-fault drivers; 58% are male and 42% are female Male drivers within 16-20 years of age are the highest male at-fault drivers Female drivers within 16-20 and 31-40 years of age are the highest female at-fault drivers Intersection Collision Statistics 77% of injury collisions occurred at intersections The intersection of St. Albert Trail & Giroux/Boudreau Road has the highest number of total collision occurrences Approximately 49% of all intersection collisions involved rear end collisions; 23% of those rear end collisions resulted in injuries 54% reduction in left turn across path collisions from 2013 70% of intersection collisions occurred on weekdays 34% of all intersection collisions occurred during fall (September, October, November) 16% of total intersection collisions occurred in November
  • 6. St. Albert Traffic Collision Statistics, 2014 Page 6 43% of rear end collisions that occurred during fall, occurred in November – typical to when the first snowfall occurs 31% of intersection collisions occurred from 3 to 6 p.m. Mid-block Collision Statistics 23% injury collisions occurred at the mid-block locations 46% of mid-block collisions occurred due to a vehicle colliding with a parked car 19% of mid-block parked car related collisions occurred in the Grandin neighbourhood 48% of mid-block collisions occurred mid-week (Wednesday, Thursday, Friday) 32% of mid-block collisions occurred during winter (December, January, February) 45% of mid-block collisions that occurred during winter, occurred in February 18% of mid-block collisions occurred from 4 to 6 p.m. Summary Statistics 2013 2014 Change Total Collisions 886 768 -13.3% Fatal Collisions 5 0 -100% Injury Collisions 192 124 -35.4% PDO Collisions 689 644 -6.5% Intersection Collisions 559 431 -23% Mid-block Collisions 337 337 0.0% Rear End Collisions 200 209 +5.0% Left Turn Across Path Collisions 109 51 -53.2% Pedestrian Collisions 11 5 -55% Bicycle Collisions 5 2 -60% Motorcycle Collisions 9 4 -56% Vehicle- Wildlife Collisions 5 7 +40% Number of Registered Vehicles 50424 51944 +3.0% Number of Licensed Drivers 48423 49387 +2.0% Note: Statistics of Collisions which occurred on public roadways “-” indicates decrease “+” indicates increase
  • 7. St. Albert Traffic Collision Statistics, 2014 Page 7 CHAPTER 1: INTRODUCTION Background This report provides a summary of motor vehicle collision incidents that were reported to have occurred from January 1, 2014 to December 31, 2014 within St. Albert. The City of St. Albert maintains a data file which contains all reportable collisions that occur on roadways (both public and private roadways) in St. Albert. The information is collected from the provincial report form, which is completed by members of the Royal Canadian Mounted Police (RCMP) either on paper at the scene of the collision or electronically at the front counter of a divisional or community police station. The database reflects all reported collisions on public roadways that results in property damage of CAD $2,000 or greater, as well as any collision that results in a major or minor injury or fatality. The information presented in this report is based upon reportable incidents provided by Alberta Transportation. The information provided within this report is produced based upon collisions reported at the time of printing. Due to continuing police investigations, some numbers presented in this report may be subject to revision. Structure of the Report Chapter 1 provides the background information of the report. In addition, an overview of St. Albert’s location, road network, transit network, speed limits and playground zones, and demographic information (including population, number of registered vehicles and licensed drivers) have also been illustrated. The remainder of this report is organized into the following chapters: Chapter 2 discusses city-wide historical collision statistics and trends. This section of the report contains overall collision trends which represent all collision occurrences within the city on both public (intersection and mid-block) and private roadways (parking lots). Chapter 3 describes 2014 collision statistics and trends from incidents occurring on public roadways only (i.e., intersections and mid-block); private roadway (parking lot) information has been removed from this section of the report. Overall statistics on various aspects of collision occurrences are identified inclusive of: types and severities, highest collisions intersections, temporal distribution of collisions, collisions by neighbourhoods, vulnerable road user incidents and vehicle-wildlife collisions. Chapter 4 represents the information about the identified “at-fault” drivers, including age distribution, sex and driver actions.
  • 8. St. Albert Traffic Collision Statistics, 2014 Page 8 Geographical Location St. Albert, the second-largest city in the Edmonton Capital Region with a population of 63,255 (density 1273.4 per km2 ), is located north-west of the city of Edmonton, Alberta1 . Figure 1 illustrates the geographic location of St. Albert. Figure 1: Geographical Location of St. Albert 1 2014 St. Albert Census, Municipal Census Report, City of St. Albert
  • 9. St. Albert Traffic Collision Statistics, 2014 Page 9 Roadway Network Figure 2 illustrates the roadway network of St. Albert. The road network is comprised of approximately 68.24 km of arterial roadway, 74.21 km of collector roadway and 162.92 km of local roadway. St. Albert Trail (also known as Highway 2) is the major north-south arterial corridor and also connects to Edmonton at the south end. The Boudreau/Giroux Road corridor is the major east-west arterial which links with St. Albert Trail and connects the eastern and western sections of the city. Figure 2: Road Network of St. Albert
  • 10. St. Albert Traffic Collision Statistics, 2014 Page 10 Demographic Information Population The 2014 Municipal Census reported a population of 63,255 in St. Albert which represents a growth of 3.7% from the 2012 census where the recorded population was 60,994 (Figure 3). The average annual growth rate over this period was 1.85%, which is more than double the 0.71% average annual growth experienced between 2010 and 2012. The population growth rate for 2012 to 2014 is the highest growth rate since the increase from the 2000 to the 2003 census period. The largest age category, which represents 22.44% of the population, is between 50-64 years of age (mature adults) (Figure 4). In 2014, the female population represented 51% of the overall population while male was 49%2 . Figure 3: Total Population of St. Albert Figure 4: 2014 Population by Age of St. Albert 2 2014 St. Albert Census, Municipal Census Report, City of St. Albert 1997 1998 1999 2000 2001 2003 2005 2006 2008 2010 2011 2012 2014 Population 48,065 49,243 50,479 51,716 53,081 54,588 56,310 57,719 58,501 60,138 61,466 60,994 63,255 45,000 47,000 49,000 51,000 53,000 55,000 57,000 59,000 61,000 63,000 65,000 TotalPopulation 0 4 5 9 10 14 15 19 20 24 25 29 30 34 35 39 40 44 45 49 50 54 55 59 60 64 65 69 70 74 75 79 80 84 85+ 2014 Population 2729 3848 3987 4289 3938 3094 3490 3702 4266 4350 4946 4595 3933 3225 2173 1410 1023 1039 0 1000 2000 3000 4000 5000 6000 Population
  • 11. St. Albert Traffic Collision Statistics, 2014 Page 11 Registered Vehicles & Licensed Drivers According to Alberta Transportation (AT), currently there are 51,9443 registered vehicles and 49,3874 licensed drivers in St. Albert (Figure 5). For the registered motorized vehicles, counts include all motorized vehicles that can be driven on the highway (as defined by the Alberta Traffic Safety Act). However, trailers, off-highway vehicles, and dealer-plated vehicles were excluded from the counts. In terms of licensed drivers, counts include all classes of licensed drivers, including learner’s class and valid licenses that have not expired. Counts do not include suspended drivers, ID card holders, or any drivers with expired licenses. In 2014, there was a 2% increase of licensed drivers, whereas a 3% increase of registered vehicles from 2013. In term of car ownership per household, the ratio of registered vehicles and occupied dwelling units was 2.24 (total dwelling units 23,168) which indicates that every household has at least two registered vehicles. These numbers act as indicators of a community’s car dependency and vehicle-centric priority. Figure 5: Number of Registered Vehicles & Licensed Drivers of St. Albert 3 Vehicle Geographical Statistics, Alberta Transportation, Office of Traffic Safety 4 MOVES Operator Reports, Alberta Transportation, Office of Traffic Safety 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Registered Vehicles 44577 46297 48774 51332 52387 50529 49195 49572 50424 51944 Licensed Drivers 46249 46991 47985 48807 49818 48455 47740 47825 48423 49387 40000 42000 44000 46000 48000 50000 52000 54000 Number
  • 12. St. Albert Traffic Collision Statistics, 2014 Page 12 Neighborhoods There are a total of 24 neighborhoods in the city. As identified in Figure 6., St. Albert’s most populated neighbourhoods are: • Grandin at 11.7% of the total population • Lacombe Park at 11.6% of the total population • Deer Ridge at 9.9% of the total population Since 2012, the neighbourhood with the highest population growth was North Ridge, where there was an increase in population of 1,029 people. North Ridge was followed by Erin Ridge North, with an increase of 498 people. Figure 6: Population of St. Albert (2014) by Neighborhoods
  • 13. St. Albert Traffic Collision Statistics, 2014 Page 13 Transit Network The city runs St. Albert Transit (StAT) which has 15 local routes and 8 commuter routes to Edmonton (Figure 7). Currently StAT operates 55 buses and the fleet travels a total of 2.2 million kilometres and carries 1.25 million riders annually. Figure 7: Transit Network of St. Albert
  • 14. St. Albert Traffic Collision Statistics, 2014 Page 14 Speed Limits, School Zones, and Playground Zones Similar to other municipalities, St. Albert utilizes school zones, which is an identified section of road close to a school where the speed limit is reduced to 30 km/h and is in effect on school days between the hours of 8 a.m. to 4 p.m. The City also operates with both Playground Areas and Playground Zones. A Playground Area is a location identifying a playground; however there is no reduction in travel speed on the roadway. A Playground Zone operates with an identifiable speed reduction to 30 km/h and is in effect starting at 8:30 a.m. and ending one hour after sunset. With the exception of school and playground zones (during specified times), all collector and local roads within St. Albert operate at 50 km/h unless otherwise posted. Figure 8 identifies posted speed limits within the city. Figure 8: Speed limits and School / Playground Zones of St. Albert Road Network
  • 15. St. Albert Traffic Collision Statistics, 2014 Page 15 CHAPTER 2: HISTORICAL COLLISION STATISTICS City-wide Collision Trends (inclusive of both Public and Private Roads) Figures 9 and 10 illustrate the city-wide total collision frequency and percentages of collision frequency change from 2005 to 2014. City-wide collision frequency includes collisions that occurred on public roadways (i.e., intersection and mid-block) and also in private parking lots. Within the timeframe of 2005 to 2014, the highest number of collisions was reported in 2009 (1,862 collisions), while the lowest number occurred in 2005 (1,067 reported collisions). Over the past 10 years, the highest increase in annual collision occurrence took place from 2006 to 2007 where there was a 21% increase in reported collisions (Figure 10). In 2011, there were substantial decreases recorded (approximately 18% reduction from 2010; however, in 2011 the level of reporting property damage only (PDO) collisions was adjusted to CAD $2,000 from CAD $1,000 which may have led to a higher percentage variance. In comparison to 2013, 2014 recorded a 10% Collision Reduction city-wide Several road safety initiatives/countermeasures have been implemented with the intent of addressing and reducing collision occurrences, inclusive of: • In 2001, red light cameras were first introduced at two intersections: St. Albert Trail & Hebert Road/Gervais Road intersection St. Albert Trail & McKenney Avenue/Bellerose Drive intersection o Speed enforcement was added to the cameras in 2009, thus making them intersection safety devices (ISDs) with enforcement occurring for both red light violations and speed violations o In 2013 intersection safety devices (ISDs) were implemented at the St. Albert Trail & Giroux Road/Boudreau Road intersection. • In 2014, protected only left turn signal phases were introduced at intersections along the St. Albert Trail corridor. Protected only left turns now operate at 11 of 14 intersections along the corridor – for the high volume north and southbound directions. In 2014 (city-wide), there were 1,194 reported collisions which represent an overall 10% collision reduction from 2013.
  • 16. St. Albert Traffic Collision Statistics, 2014 Page 16 Figure 9: City-wide Historical Collision Incidents Reported (2005- 2014) Figure 10: Percentage of Annual Collision Incidents Reported Change * Change identified for the year is in comparison to the previous year Figure 11 represents the annual collision frequency (number of occurrences) at intersections, mid-block locations, and within parking lots from the year 2012 to 2014. The distributions of collision occurrences at the various types of locations are quite 2006 2007 2008 2009 2010 2011 2012 2013 2014 Percentage of Change 19% 21% 4% 16% 7% 18% 1% 6% 10% 25% 20% 15% 10% 5% 0% 5% 10% 15% 20% 25% PercentageofChange
  • 17. St. Albert Traffic Collision Statistics, 2014 Page 17 similar. In 2014, there was a 23% reduction of intersection collision occurrences from 2013. During this period there was a substantial reduction of left turn across path collisions at intersections along St. Albert Trail following the implementation of protected only left turn signal phases. 2014 reported a 23% Intersection Collision Reduction from 2013 Figure 11: 2012-2014 Collision Incidents by Location Type For a better understanding of city-wide collision trends, it is important to take into account city population or registered vehicles as a proxy for exposure or risk of collision occurrence. This is achieved by considering the collision occurrences per 1,000 population rather than simple collision frequency. Figure 12 identifies the annual collision rates per 1,000 population in St. Albert from 2005 to 2014. From 2005 to 2010 there was an increasing trend in collision rates which led to the highest recorded collision rate within this time frame, of 28.88% in 2010. In 2011 the rate decreased 19.9% from 2010; however, it remained fairly constant in the years 2011 and 2012. An 18% reduction of collision per 1,000 population occurred in 2014 from 2012 (Figure 12). Figure 13 represents the reduction of collisions per 1,000 registered vehicles in the same time frame. In 2014 there was a 13% reduction of collisions per 1,000 registered vehicles in St. Albert from the previous year. Intersection Midblock Parking Lot 2012 581 406 420 2013 559 337 431 2014 431 337 426 0 100 200 300 400 500 600 700 CollisionFrequency
  • 18. St. Albert Traffic Collision Statistics, 2014 Page 18 18% Reduction of Collision per 1,000 Population from 2012 to 2014 Figure 12:Collision per 1,000 Population of St. Albert * No population survey was conducted in 2013 13% Reduction of Collision per 1,000 Registered Vehicles from 2013 Figure 13:Collision per 1,000 Registered Vehicles of St. Albert 2005 2006 2008 2010 2011 2012 2014 Collision Rate 18.95 22.09 27.54 28.88 23.13 23.07 18.88 0 5 10 15 20 25 30 35 Collisionper1000Population 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Collision Rate 23.94 27.54 31.74 31.38 35.54 34.38 28.91 28.38 26.32 22.99 0 5 10 15 20 25 30 35 40 Collisionper1000RegisteredVehicle
  • 19. St. Albert Traffic Collision Statistics, 2014 Page 19 CHAPTER 3: 2014 COLLISION STATISTICS ON PUBLIC ROADWAYS Collision Trends on Public Roadways This section discusses reported collision occurrences, severities and trends that occurred only on public roadways (i.e., intersections and mid-blocks) and excludes all collisions that concurred in private parking lots. There were no fatal collision occurrences in 2014 on public roadways, which indicate a 100% reduction of fatal collisions from 2013 (Figure 14). Overall, there was a 35% and 7% reduction of injury and PDO collision occurrences respectively from 2013. 100% Reduction of Fatal Collisions 35% Reduction of Injury Collisions 7% Reduction of PDO Collisions from 2013 Figure 14: Collision Occurrences (2012- 2014) in Public Roadways by Severity Fatality Injury Property Damage Only 2012 1 146 837 2013 5 192 689 2014 124 644 0 100 200 300 400 500 600 700 800 900 CollisionFrequency
  • 20. St. Albert Traffic Collision Statistics, 2014 Page 20 Figure 15: Registered Vehicle, Licensed Drivers and Collision Frequency Trend Figure 15 depicts the registered vehicle, licensed drivers, and collision frequency trend from 2012 to 2014. Although the number of registered vehicles and licensed drivers increased over the past few years, collision occurrences have decreased from 2012 to 2014. Overview In 2014, there were 768 total collisions that occurred on public roadways (private parking lot incidents excluded). Based on the location of collision occurrences, public roadways can be divided into two locations: i) intersection locations ii) mid-block locations Figure 16 represents the 2014 collision occurrences by location and severity. Approximately 56% of total collisions occurred at intersections, whereas 44% occurred at mid-block locations. 600 650 700 750 800 850 900 950 1000 47500 48000 48500 49000 49500 50000 50500 51000 51500 52000 52500 2011 2012 2013 2014 2015 CollisionFrequency Number Year RegisteredVehicle Licensed Drivers CollisionFrequency
  • 21. St. Albert Traffic Collision Statistics, 2014 Page 21 0 Fatal Collision occurred in public roadways 77% Injury Collision occurred at the Intersection 124 Injury Collisions resulted in 4 major injuries and 166 minor injuries to road users Figure 16: Distribution of Collision Occurrences by Location and Severity There were no fatality resulting collision occurrences in 2014. There were 124 total injury collisions reported: 28 occurrences at mid-block locations and 96 occurrences at intersection locations. Of these 124 collisions that resulted in injuries: • 4 road users reported major injuries as a result of an incident • 166 road users reported minor injuries as a result of an incident In summary, the 124 injury collisions resulted in a total of 170 road users with major or minor injuries (multiple vehicle occupants or road users may be injured in a single reported collision incident).
  • 22. St. Albert Traffic Collision Statistics, 2014 Page 22 Intersection Collisions Intersections are the most collision prone locations in the road network due to the interaction of multiple road users and the different directional vehicular/pedestrian movements that result in conflicting points. For instance, in a 4-leg intersection there are 32 conflict points and in a 3-leg intersection (T-intersection) there are 9 conflicts points. In 2014, 56% of the total collisions that occurred on public roadways occurred at intersections. In terms of severity, 77% of injury collisions occurred at intersections. Figure 17 illustrates the density of intersection collision incidents which identifies that most reported collisions occurred along the St. Albert Trail and Boudreau Road corridors. St. Albert Trail and Boudreau Road are the two major arterials where traffic volume is significantly higher compared to other arterials within the city. Previous traffic safety research has shown that there is a relationship between collision occurrence and traffic volume – as traffic volumes increase; vehicle collision frequency increases. Figure 17: 2014 Intersection Collision Density
  • 23. St. Albert Traffic Collision Statistics, 2014 Page 23 St. Albert Trail & Giroux/ Boudreau Road Ranked One as High Collision Intersection based upon collision frequency Table 1: 2014 Top Ten High Collision Intersections Rank Intersection Name Collision Frequency 1 St. Albert Trail & Giroux/Boudreau Road 30 2 St. Albert Trail & McKenney Avenue/Bellerose Drive 27 3 Boudreau Road & Bellerose Drive 25 3 St. Albert Trail & Villeneuve/Erin Ridge Road 25 4 St. Albert Trail & Hebert /Gervais Road 19 5 St. Albert Trail & St. Anne Street/Sturgeon Road 16 6 Boudreau Road & Campbell Road 14 7 Ray Gibbon Drive & LeClair Way 11 7 St. Albert Trail & Lennox/Inglewood Drive 11 7 St. Albert Trail & Gate Avenue 11 Table 2: 2013 Top Ten High Collision Intersections Rank Intersection Name Total Collision Frequency 1 St. Albert Trail & Giroux/Boudreau Road 55 2 St. Albert Trail & Hebert /Gervais Road 42 3 St. Albert Trail & Villeneuve/Erin Ridge Road 25 4 Boudreau Road & Bellerose Drive 23 4 Boudreau Road & Campbell Road 23 5 St. Albert Trail & St. Vital Avenue/Rivercrest Crescent 21 6 St. Albert Trail & McKenney Avenue/Bellerose Drive 19 6 St. Albert Trail & St. Anne Street/Sturgeon Road 19 7 St. Albert Trail & Gate Avenue 12 8 Boudreau Rd & Sir Winston Churchill Avenue 11 Table 1 and Figure 18 represent the ten highest collision intersections based on total collision frequency in 2014. Seven out of the top 10 identified intersections are on the St. Albert Trail corridor. In 2014, the intersection of St. Albert Trail and Giroux Road/Boudreau Road was ranked the highest in collision frequency occurrences with 30 collisions. This is the second year, the road has received this distinction. However, there was a 45.5% reduction of collisions at this intersection compared to 2013. St. Albert Trail and McKenney Avenue/ Bellerose Drive ranked second in the collision frequency ranking followed by the intersection of Boudreau Road and Bellerose Drive. For an annual comparison, Table 2 identifies the ten highest collision intersections reported in 2013.
  • 24. St. Albert Traffic Collision Statistics, 2014 Page 24 Figure 18: 2014 Top Ten Collision Intersections Note – The number identifies the intersection ranking for collision frequency
  • 25. St. Albert Traffic Collision Statistics, 2014 Page 25 49% of Intersection Collisions involved Rear End Collisions 23% Rear End Collisions resulted in Injuries Left Turn Across Path Collisions Significantly Decreased (54%) from 2013 Figure 19: Intersection Collisions by Severities and Types 0 20 40 60 80 100 120 140 160 180 Backing Bicycle Involved Head On Left Turn Across Path Off Road Left Pedestrian Involved Rear End Right Angle Side Swipe Same Direction Struck Object Backing Head On Hit and Run Left Turn Across Path Off Road Left Off Road Right Passing Left Turn Passing Right Turn Rear End Right Angle Side Swipe Opposite Direction Side Swipe Same Direction Struck Object InjuryPDO Intersection Collision Frequency
  • 26. St. Albert Traffic Collision Statistics, 2014 Temporal Distribution of Intersection Collision Occurrences Figure 20: Intersection Collision Occurrences by Day of the Week and Types Thursday 15% Friday 17% Saturday 18% 0 5 Backing Bicycle Involved Head On Hit and Run Left Turn Across Path Off Road Left Off Road Right Passing Left Turn Passing Right Turn Pedestrian Involved Rear End Right Angle Side Swipe Opposite Direction Side Swipe Same Direction Struck Object Intersection Saturday Friday Thursday Wednesday Intersection Collisions Occurred on Weekdays Rear End Collisions Occurred on Weekdays Left Turn Across Collisions Occurred on Weekdays Temporal Distribution of Intersection Collision Occurrences Intersection Collision Occurrences by Day of the Week and Types Sunday 12% Monday 8% Tuesday 15% Wednesday 15% 10 15 20 25 30 35 40 45 Collision Frequency Wednesday Tuesday Monday Sunday Page 26 70% Intersection Collisions Occurred on Weekdays 74% Rear End Collisions Occurred on Weekdays 79% Left Turn Across Path Collisions Occurred on Weekdays Intersection Collision Occurrences by Day of the Week and Types
  • 27. St. Albert Traffic Collision Statistics, 2014 Page 27 34% Injury Collisions Occurred during Weekends 24% Injury Collisions Occurred on Saturday Figure 21: Intersection Collision Occurrences by Day of the Week and Severity 0 10 20 30 40 50 60 Sunday Monday Tuesday Wednesday Thursday Friday Saturday Intersection Intersection Sunday Monday Tuesday Wednesday Thursday Friday Saturday PDO 39 31 48 57 53 55 52 Injury 10 5 18 9 12 19 23 Figure 21 identifies intersection collision occurrences by day of the week and severity. In 2014, approximately 77% of injury collisions occurred at intersections; of which 34% of these injury collisions occurred during weekends. Approximately 24% of collisions that resulted in major or minor injuries occurred on a Saturday.
  • 28. St. Albert Traffic Collision Statistics, 2014 Figure 22: Intersection Collision Occurrences by Month of the Year and Seasons 5 El-Basyouny,K., Barua, S., & Islam, T., (2014), using full Bayesian multivariate Poisson lognormal models 91-99. Spring 19% Summer 22% Winter 25% September October November Fall Total 42 40 67 0 10 20 30 40 50 60 70 80 CollisionFrequency Figure 22 represents intersection collision occurrences by month and season. It shows approximately 34% of collisions occurred during fall months (September/October/November). However, from the 2014 monthly collision distribution, it shows that 16% of total intersection collisions occurred in alone; this may be caused by a change in conditions due to weather. Previous research shown that the onset of snow number of collisions5 . Highest frequency of Intersection Collisions Occurred during Fall (September /October / November Intersection Collisions that Occurred during Fall Occurred in November Intersection Collision Occurrences by Month of the Year and Seasons Basyouny,K., Barua, S., & Islam, T., (2014), Investigation of time and weather effects on crash types using full Bayesian multivariate Poisson lognormal models, Accident Analysis and Prevention, Vol. 73, pp. Fall 34% Spring 19% March April May June July August January Spring Summer Intersection 35 21 26 26 32 35 34 intersection collision occurrences by month and season. It shows approximately 34% of collisions occurred during fall months (September/October/November). However, from the 2014 monthly collision distribution, it shows that 16% of ions occurred in November alone; this may be caused by a change in road due to weather. Previous research has also onset of snow correlates with the Page 28 Highest frequency of Intersection Collisions Occurred during (September /October / November 45% Intersection Collisions that Occurred during Fall Occurred in November Intersection Collision Occurrences by Month of the Year and Seasons Investigation of time and weather effects on crash types , Accident Analysis and Prevention, Vol. 73, pp. January February December Winter 34 34 39
  • 29. St. Albert Traffic Collision Statistics, 2014 Page 29 43% Rear End Collisions that Occurred during Fall Occurred in November when the snowfall starts In 2014, the Capital Region area experienced its first snow fall on September 8; however a more lasting seasonal change and snowfall occured in the first weeks of November . Figure 23: Intersection Collision Occurrences by Collision Types and Seasons 6 El-Basyouny, K., Barua, S., Islam, T., & Li, R, (2014), Assessing the effect of weather states on crash severity and type by use of Full Bayesian multivariate safety models, Transportation Research Record: Journal of Transportation Research Board, No. 2432, pp. 65-73. 0 10 20 30 40 50 60 70 80 Backing Bicycle Involved Head On Hit and Run Left Turn Across Path Off Road Left Off Road Right Passing Left Turn Passing Right Turn Pedestrian Involved Rear End Right Angle Side Swipe Opposite Direction Side Swipe Same Direction Struck Object Intersection Collision Frequency Winter Summer Spring Fall Figure 23 illustrates intersection collision occurrences by collision types and seasons. Previous research has shown that major snow events following dry weather increases the number of rear end collisions6 which can also be seen in Figure 23. It identifies that 35% of rear end collisions occurred during fall. Approximately 43% of these rear end collisions in fall took place in November when snow fell and stayed.
  • 30. St. Albert Traffic Collision Statistics, 2014 Page 30 31% Intersection Collisions Occurred from 3:00 PM- 6:00PM Figure 24: Intersection Collision Occurrences by Time of the Day 0 1 1 2 2 3 4 5 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24 Collision Frequency 2 4 1 3 9 24 19 24 24 31 41 16 14 39 49 47 26 22 12 12 5 3 0 10 20 30 40 50 60CollisionFrequency Figure 24 illustrates intersection collision occurrences by time of the day. Similar to 2013, the afternoon rush hour period from 3:00 to 6:00 p.m. (reaching a peak collision period around 4:00 to 5:00 p.m.) accounted for the highest proportion (31%) of intersection collisions in 2014. The least collision occurrences occurred in the early morning (2:00 to 6:00 a.m.).
  • 31. St. Albert Traffic Collision Statistics, 2014 Page 31 Mid-block Collisions In 2014, 44% of the total collisions occurred at mid-block locations. Figure 25 illustrates the density of mid-block collision occurrences which indicates the majority occurred along the St. Albert Trail corridor. Due to high traffic volumes and commercial access point density (high number of access and exit points on to the roadway), collision densities along St. Albert Trail are substantially high. Figure 25 : Mid-block Collision Density (2014) of St. Albert Figure 25 also shows a high concentration of mid-block collisions along Perron Street. It should be noted that the density distribution and identification of “hot spots” is relative to the overall distribution of occurrences throughout the city. 2014 Collision statistics identified three mid-block collision occurrences on Perron Street; however, as those three collisions occurred within a very small road segment of Perron Street, the density becomes high compared to other road segments where the collisions were very segregated. Two of the three mid-block collisions on Perron Street occurred due to unsafe backing and the remaining one was a hit and run of a parked car.
  • 32. St. Albert Traffic Collision Statistics, 2014 Page 32 23% Mid-block Collisions caused by Struck a Object 15% Mid-block Collisions occurred because of Sideswipe in Same Direction 8% Mid-block Collisions resulted in Injuries Figure 26: Mid-block Collisions by Severities and Types In 2014, 18% of mid-block collisions occurred due to backing from a residential driveway. Approximately 46% of the mid-block collisions occurred due to a vehicle striking a parked vehicle (Figure 27). Most incidents involving parked vehicles occurred in Grandin, where the population density is high (Figure 28). 0 10 20 30 40 50 60 70 80 Backing Off Road Right Rear End Right Angle Side Swipe Opposite Direction Struck Object Backing Head On Hit and Run Left Turn Across Path Off Road Left Off Road Right Others Passing Left Turn Passing Right Turn Pedestrian Involved Rear End Right Angle Side Swipe Opposite Direction Side Swipe Same Direction Struck Object InjuryPDO Midblock Collision Frequency
  • 33. St. Albert Traffic Collision Statistics, 2014 Figure 27: Mid-block Collision Distribution Related to Parked Cars Figure 28: Neighbourhood with Frequency of Occurrence of Parked Car Related Collisions Others 54% 0 5 Inglewood Erin Ridge North Downtown Campbell Pineview Heritage Lakes Oakmont Forest Lawn Braeside Mission Kingswood North Ridge Woodlands Akinsdale Sturgeon Lacombe Erin Ridge Deer Ridge Grandin 46% Mid-block Collisions involved a parked car 19% of Mid-block Parked Car related Collisions occurred in Grandin block Collision Distribution Related to Parked Cars Neighbourhood with Frequency of Occurrence of Parked Car Related Parked Car Related 46% 10 15 20 25 Page 33 46% block Collisions involved a ar being hit 19% block Parked Car related Collisions occurred in Grandin Neighbourhood with Frequency of Occurrence of Parked Car Related 30 35
  • 34. St. Albert Traffic Collision Statistics, 2014 Temporal Distribution of Mid Figure 29: Mid-block Collision Occurrences by Day of the Week and Types Wednesday Thursday 16% Friday 16% Saturday 14% 0 Backing Head On Hit and Run Left Turn Across Path Off Road Left Off Road Right Others Passing Left Turn Passing Right Turn Pedestrian Involved Rear End Right Angle Side Swipe Opposite Direction Side Swipe Same Direction Struck Object Midblock Saturday Friday Thursday 74% Of Mid-block Collisions Occurred on Weekdays 83% Rear End Collisions Occurred on Weekdays Temporal Distribution of Mid-block Collision Occurrences block Collision Occurrences by Day of the Week and Types Sunday 12% Monday 14% Tuesday 12% Wednesday 16% 2 4 6 8 10 12 14 16 Collision Frequency Thursday Wednesday Tuesday Monday Sunday Page 34 74% block Collisions Occurred on Weekdays 83% Rear End Collisions Occurred on Weekdays block Collision Occurrences by Day of the Week and Types 18
  • 35. St. Albert Traffic Collision Statistics, 2014 Page 35 79% Mid-block Injury Resulting Collisions Occurred on Weekdays 24% Mid-block Injury Resulting Collisions Occurred on a Saturday Figure 30: Mid-block Collision Occurrences by Day of the Week and Severity 0 10 20 30 40 50 60 Sunday Monday Tuesday Wednesday Thursday Friday Saturday Midblock Mid block Sunday Monday Tuesday Wednesday Thursday Friday Saturday PDO 36 45 35 51 49 48 45 Injury 3 1 6 3 6 6 3 In 2014, 79% of mid-block injury collisions occurred during weekdays. Figure 30 exhibits mid-block collision occurrences by day of the week and severity. It shows that approximately 64% of collisions that resulted in major or minor injuries occurred on a Tuesday, Thursday or Friday. In terms of PDO collisions, 74% of mid-block PDO collisions occurred during weekdays.
  • 36. St. Albert Traffic Collision Statistics, 2014 Figure 31: Mid-block Collision Occurrences by Month of the Year and Seasons Summer 22% Winter 32% September October November Fall Total 21 33 38 0 10 20 30 40 50 60 CollisionFrequency Figure 31 represents mid-block collision by month of the year and season. It shows approximately 32% of collisions occurred during winter months. From the monthly collision distribution it shows that about 15% of total mid-block collisions occurred in February. Further, about 45% of a occurred during winter, took place in February. Heavy snowfall, extreme weather conditions, and slippery road surface conditions may be some of the contributing factors of these collisions. 32% Mid-block Collisions Occurred during Winter (December/ January / February) 45% Mid-block Collisions that Occurred Occurred in February block Collision Occurrences by Month of the Year and Seasons Fall 27% Spring 19% March April May June July August Spring Summer Mid block 26 19 20 25 19 28 block collision occurrences by month of the year and season. It shows approximately 32% of collisions occurred during winter months. From the monthly collision distribution it shows block collisions occurred in February. Further, about 45% of all collisions that occurred during winter, took place in February. Heavy snowfall, extreme weather conditions, and slippery road surface conditions may be some of the contributing Page 36 32% block Collisions Occurred during Winter months mber/ January / February) 45% block Collisions that Occurred during Winter, Occurred in February block Collision Occurrences by Month of the Year and Seasons January February December Winter 27 49 32
  • 37. St. Albert Traffic Collision Statistics, 2014 Page 37 57% Struck Object Collisions that Occurred during fall Occurred in the month of November, when road conditions typically change for the season Figure 32: Mid-block Collision Occurrences by Collision Types and Seasons 7 El-Basyouny, K., Barua, S., Islam, T., & Li, R, (2014), Assessing the effect of weather states on crash severity and type by use of Full Bayesian multivariate safety models, Transportation Research Record: Journal of Transportation Research Board, No. 2432, pp. 65-73. 0 5 10 15 20 25 30 35 Backing Head On Hit and Run Left Turn Across Path Off Road Left Off Road Right Others Passing Left Turn Passing Right Turn Pedestrian Involved Rear End Right Angle Side Swipe Opposite Direction Side Swipe Same Direction Struck Object Midblock Winter Summer Spring Fall Figure 32 illustrates mid-block collision occurrences by collision types and seasons. Previous research has shown that major snow events, following dry weather, increases the number of struck parked vehicle collisions7 , which can also be seen in Figure 32. It shows that a high proportion of struck object collisions occurred during winter and fall and 57% of those collisions that occurred during fall, happened in November when typically heavier snowfalls occur and these type of road conditions become more permanent for the season creating icy and slippery conditions. Further, approximately 32% of collisions due to backing took place during the winter, and 90% of those collisions occurred due to a vehicle striking a parked car while backing.
  • 38. St. Albert Traffic Collision Statistics, 2014 Page 38 18% Mid-block Collisions Occurred from 4:00 PM- 6:00PM Figure 33: Mid-block Collision Occurrences by Time of the Day 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24 Collision Frequency 5 3 1 2 1 4 11 23 10 15 19 26 24 14 15 20 25 34 23 16 6 6 10 8 0 5 10 15 20 25 30 35 40 CollisionFrequency Figure 33 illustrates mid-block collision occurrences by time of the day. Similar to intersection collisions, the afternoon rush hour period from 4 to 6 p.m. (reaching a peak collision period around 5 - 6 p.m.) accounted for the highest proportion (18%) of mid- block collisions. The least collisions occurred in the early morning (2 - 5 a.m.).
  • 39. St. Albert Traffic Collision Statistics, 2014 Page 39 14% of Total Collisions Occurred in Grandin Collision by Neighbourhoods Figure 34: Collision Frequency of Occurrences by Neighbourhoods 0 5 10 15 20 25 30 35 40 45 50 Riverside Riel Erin Ridge North Inglewood Braeside Oakmont Forest Lawn Kingswood North Ridge Downtown Campbell Heritage Lakes Woodlands Sturgeon Pineview Lacombe Akinsdale Mission Erin Ridge Deer Ridge Grandin Collision Frequency Figure 34 illustrates collision occurrences by neighbourhoods. In 2014, the highest volume of collisions occurred in Grandin (14%) followed by Deer Ridge and Erin Ridge. These results are intuitive as Grandin is one of the most populated neighbourhoods and the increase of exposure (population) increases potential risk of collisions. To account for the population densities, collision per 1,000 population has also been determined (Figure 35) for the neighbourhoods. It shows that Downtown has the highest collision rate followed by Mission. The
  • 40. St. Albert Traffic Collision Statistics, 2014 Page 40 population density of the downtown area is quite low; however, it’s high traffic volume ( destination from commercial and event locations and occurrences) results in a high collision rate for St. Albert’s Downtown. Figure 35: Collision per 1,000 Populations of Neighbourhoods in St. Albert
  • 41. St. Albert Traffic Collision Statistics, 2014 Page 41 56% Reduction of Motorcycle Collision incidents 60% Reduction of Bicycle Collision incidents 55% Reduction of Pedestrian Collision incidents Vulnerable Road User Collisions Figure 36: 2012 - 2014 Vulnerable Road User Collisions with Severity 0 1 2 3 4 5 6 7 8 Injury PDO Fatality Injury PDO Fatality Injury PDO BicycleMotorcyclePedestrian Bicycle Motorcycle Pedestrian Injury PDO Fatality Injury PDO Fatality Injury PDO 2014 2 1 3 4 1 2013 4 1 1 4 4 3 7 1 2012 4 1 5 5 6 3 Figure 36 exhibits the 2012 to 2014 vulnerable road user collision occurrences and severity on public roadways. In 2014, there was a 56%, 60% and 55% reduction of motorcycle, bicycle and pedestrian collisions respectively, compared to 2013. Figure 37 shows the location of vulnerable road user collision occurrences in 2014. Bicycle Motorcycle Pedestrian 2012 5 10 9 2013 5 9 11 2014 2 4 5 0 2 4 6 8 10 12 CollisionFrequency
  • 42. St. Albert Traffic Collision Statistics, 2014 Page 42 Figure 37: Vulnerable Road User Collision Occurrence Locations
  • 43. St. Albert Traffic Collision Statistics, 2014 Page 43 Vehicle Wildlife Collisions In 2014, 7 motor vehicle collisions occurred that involved wildlife (Figure 38). In 2013, 5 incidents occurred and in 2012, 6 incidents took place between vehicles and wildlife. Of these 7 occurrences, one incident involved a vehicle striking a moose, while the rest involved motor vehicles striking deer. Severity of these incidents: two collisions resulted in minor injuries; five incidents resulted in property damage only. Figure 38: Vehicle Wildlife Collision Occurrence Locations
  • 44. St. Albert Traffic Collision Statistics, 2014 CHAPTER 4: AT FAULT DRIVER’S INFOR Figure 39: Age and Gender Distribution of At Male 58% 16 20 21 25 26 30 31 35 36 40 41 45 46 50 51 55 56 60 61 65 66 70 71 75 76 80 81 85 86 90+ 16 20 21 25 26 30 31 35 36 40 41 45 46 50 51 55 56 60 61 65 66 70 71 75 76 80 81 85 86 90+ FemaleMale 0 10 20 30 58% At-Fault Drivers are Male Aged 16-20 years of Male Drivers are the Most At-Fault Drivers Aged 16-20 & 31 years of Female Drivers are the Most At-Fault Drivers The age group 16 – 20 Represents only 7% of the population FAULT DRIVER’S INFORMATION Age and Gender Distribution of At-Fault Drivers in St. Albert Female 42% 40 50 60 Page 44 58% Fault Drivers are Male 20 years of Male Drivers are the Most Fault Drivers 20 & 31-40 years of Female Drivers are the Most Fault Drivers The age group 20 epresents only 7% of the population
  • 45. St. Albert Traffic Collision Statistics, 2014 Page 45 Driver Actions of At-Fault Drivers are similar for Male & Female Drivers Most of the Collisions occurred due to Following Too Closely & Backing Unsafely Figure 40: Driver Action of At-Fault Drivers by Gender in St. Albert Backed Unsafely Careless Driving Disobey Traffic Signal Distracted Driving Driving Wrong Way Fail To Ascertain Failed to yield ROW Followed Too Closely Improper Lane Change Improper Parking Improper Passing Improper Turn Left Turn Across Path Ran off road Stop Sign Violation Yield Sign Violation 0 20 40 60 80 100 120 Frequency Male Female
  • 46. St. Albert Traffic Collision Statistics, 2014 Page 46 Figure 41 demonstrates the at-fault drivers’ residence by neighbourhoods. It shows that most of the at-fault drivers reside in Grandin, Lacombe Park and Deer Ridge. Further, Figure 39 indicates 16-20 year old male and female drivers are the most at-fault drivers which is only 7% of the total population.From these information, the city authority can target these neighbourhoods for young driver education and design a driver education program to correct poor driving habits. Figure 41: At-Fault Drivers’ Residence by Neighbourhoods of St. Albert
  • 47. St. Albert Traffic Collision Statistics, 2014 Page 47 Contacting the City For questions regarding motor vehicle collision statistical analysis, process or details, or to report concerns related to traffic safety within the City of St. Albert; please contact the City Engineering Services Department at 780-459-1654 or the Manager of Transportation as per contact information below. Dean SchickDean SchickDean SchickDean Schick C.E.T Manager of Transportation Engineering Services | City of St. Albert 5 St. Anne Street | St. Albert, AB | T8N 3Z9 P: 780-459-1649 | F: 780-458-1974 dschick@stalbert.ca | www.stalbert.ca