Traffic Crash Characteristics for Jackson Area Transportation Study Wayne State University...
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Transcript of Traffic Crash Characteristics for Jackson Area Transportation Study Wayne State University...
Traffic Crash Characteristics for Jackson Area Transportation Study
Wayne State University Transportation Research Group
November 26, 2007
Map of MPO Boundaries
Jackson
Jackson County Crash Trends
Total, Injury, and Fatal Crash Trends – Jackson County (1998-2006)
Total, Injury, and Fatal Crash Trends in Jackson County (1998-2006)
29 21 22 22 20 17 21 14 21
1310 1259 1170 1229 1114 1062 1062 1131 1024
6910 7030 6958 70716910
7057
6676 6562
6050
0
1000
2000
3000
4000
5000
6000
7000
8000
1998 1999 2000 2001 2002 2003 2004 2005 2006
Year
Cra
sh
Fre
qu
en
cy
Fatal Injury Total
Compared to……MICHIGAN (1998-2006)
Total, Injury, and Fatal Crash Trends for Michigan (1998-2006)
404,793417,040
426,704
402,167 396,989 393,421
375,049
352,260
316,835
92,014 88,993 88,372 82,078 81,694 77,890 74,500 68,01261,341
1,261 1,279 1,280 1,237 1,213 1,220 1,085 1,066 1,0260
50,000
100,000
150,000
200,000
250,000
300,000
350,000
400,000
450,000
1998 1999 2000 2001 2002 2003 2004 2005 2006
Year
Cra
sh
Fre
qu
en
cy
Total Injury Fatal
Unrestrained Crashes – Jackson County (1998-2006)
Unrestrained Crash Trend for Jackson (1998-2006)
461487
517
478466
428
503
575 570
200216
154141
101127 130
153
125
2310 13 9 6 8 7 9 70
100
200
300
400
500
600
700
1998 1999 2000 2001 2002 2003 2004 2005 2006
Year
Cra
sh
Fre
qu
en
cy
Total Injury Fatal
Alcohol-Reported Crashes – Jackson County (1998-2006)
Alcohol Related Crash Trend for Jackson (1998-2006)
388
361343
319
299
271259
236 236
170 163
136129
10998 102
90100
174 7 14
6 5 5 5 100
50
100
150
200
250
300
350
400
450
1998 1999 2000 2001 2002 2003 2004 2005 2006
Year
Cra
sh
Fre
qu
en
cy
Total Injury Fatal
Speeding-Related Crashes – Jackson County (1998-2006)
Speeding Related Crash Trend for Jackson (1998-2006)
445
494 500
476
500479
450
481
326
140
170
133 139
112100 99
115
87
3 1 2 4 6 2 1 3 30
100
200
300
400
500
600
1998 1999 2000 2001 2002 2003 2004 2005 2006
Year
Cra
sh
Fre
qu
en
cy
Total Injury Fatal
Jackson County High Crash Intersections
Intersection Hot Spots (2004-2006 data)
AIRPORT RD @ COUNTY FARM RD
AIRPORT RD @ O NEILL DR
AIRPORT RD @ SCHEELE DR
AIRPORT RD @ W ARGYLE ST
AIRPORT RD @ WAYLAND DR
ANDREW AVE @ CLINTON RD
COOPER RD @ W PARNALL RD
E MICHIGAN AVE @ S DETTMAN RD
E MICHIGAN AVE @ S GORHAM ST
E MICHIGAN AVE @ S MECHANIC ST
E WASHINGTON AVE @ FRANCIS ST
E WASHINGTON AVE @ S MECHANIC ST
LANSING AVE @ W PARNALL RD
LAURENCE AVE @ WILDWOOD AVE
N BLACKSTONE ST @ W LOUIS GLICK HW
N BROWN ST @ W MICHIGAN AVE
N WEST AVE @ S WEST AVE
N WEST AVE @ W ARGYLE ST
N WEST AVE @ W GANSON ST
N WEST AVE @ W MONROE ST
N WEST AVE @ W NORTH ST
N WEST AVE @ WILDWOOD AVE
N WISNER ST @ W ARGYLE ST
N WISNER ST @ W GANSON ST
N WISNER ST @ WILDWOOD AVE
REYNOLDS RD @ SPRING ARBOR RD
ROBINSON RD @ W MICHIGAN AVE
S BROWN ST @ SPRING ARBOR RD
S JACKSON ST @ W WASHINGTON AVE
S WEST AVE @ W WASHINGTON AVE
Hotspots within Greater-Jackson(2004-2006 data)
NN
Project Objectives
Determine crash trends and characteristics for Jackson County
Select 30 high-crash locations for detailed analyses MPO will ultimately select Collect and analyze crash data (UD-10 forms)
Crash types
Specific location of crash
Probable causes of crashes
Collect and analyze traffic operational data
Recommend site-specific countermeasures
Project Objectives
For the 30 study intersections:
Peak period traffic counts
Speed studies
Existing condition survey Traffic control devices
Driveways
Lane assignments
Preparation of site diagrams
Photographs of all sites
Field Data Collection
Pattern analysis Day vs. Night Various weather conditions Peak vs. Off-peak Crash types (rear end, angle, left-turn head-on, etc.) Special circumstances (unbelted, alcohol, speeding &
red light running, etc.)
Crash causation analysis Countermeasures suggested for “correctable”
crashes
Crash Analysis
For each intersection: Traffic flow analysis
Peak flow diagrams Speed data analysis
Capacity analysis Evaluation of Level of Service (LOS)
Safety deficiency analysis Geometric Traffic control Environmental
Corridor analysis
Traffic Operations and Safety Analysis
Engineering
Signal timing plans
Signal equipment improvements
Policy-Related
Enforcement
Education
Behavioral-Related
Targeted enforcement to improve driver behavior
Countermeasures
Example Results – Kalamazoo County MPO
0
200
400
600
800
1000
1200
1400
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1997 1998 1999 2000 2001 2002 2003 2004
0
500
1000
1500
2000
2500
3000
1997 1998 1999 2000 2001 2002 2003 2004
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
0
200
400
600
800
1000
1200
1400
1600
1800
6am-9am (3 hrs) 11am-1pm (2 hrs) 4pm-6pm (2 hrs) 10pm-5am (7 hrs)
1997 1998 1999 2000 2001 2002 2003 2004
Average = 417.5
crashes/hr
Average = 558.8
crashes/hr
Average = 848.6
crashes/hr
Average = 191.6
crashes/hr
To
tal C
rash
Fre
qu
ency
Month
To
tal C
rash
Fre
qu
ency
To
tal C
rash
Fre
qu
ency
Day
Time
Temporal Crash Trends (1997-2004)
Average Crashes for Various Weather Conditions (1997-2004)
severe w ind14%
sleet/hail8%
rain25%
snow /blow ing snow16%
clear5%
fog/smoke11%
cloudy10%
uncoded11%
uncoded
clear
cloudy
fog/smoke
rain
snow /blow ing snow
severe w ind
sleet/hail
Optimized Time-Space Diagram
W. Michigan Ave. and N. Westnedge Ave.
Existing Condition Diagram
W. Michigan Ave. and N. Westnedge Ave.
2003 Collision Diagram 2004 Collision Diagram
N
LEGENDCollision Diagram for N Westnedge Avenue and W Michigan Avenue Intersection for 2003
Rear-End
Backed Into
Head On
Angle
Left-Turn Head-On
Sideswipe
Fixed Object
Parked Vehicle
Pedestrian
Other
Injury
Fatality
**
W MICHIGAN AVENUE
N W
EST
NE
DG
E A
VE
NU
E
1
2
3
45
6
7
8
9
10
11 12
13
14
15
29
17
18
19
2021 22
23
24
25
31
2827
3036
33
34
35
37
38
39
40
41
42
43
44
N
LEGENDRear-End
Backed Into
Head On
Angle
Left-Turn Head-On
Sideswipe
Fixed Object
Parked Vehicle
Pedestrian
Other
Injury
Fatality
**
1
**2
3 **4
5
6
789
11
12
13
14 15
16
17
18
19
20
10
212224
25
**
23
26
Collision Diagram for N Westnedge Avenue and W Michigan Avenue Intersection for 2004
W MICHIGAN AVENUE
N W
EST
NE
DG
E A
VE
NU
E
W. Michigan Ave. and N. Westnedge Ave.
2005 Collision Diagram
N
LEGENDRear-End
Backed Into
Head On
Angle
Left-Turn Head-On
Sideswipe
Fixed Object
Parked Vehicle
Pedestrian
Other
Injury
Fatality
**
25
2623
16
4
620
5
14
7
8 1915 22
2730
17
9
21
10
2
1328
11
1229
1
18
3
24
Collision Diagram for N Westnedge Avenue and W Michigan Avenue Intersection for 2005
W MICHIGAN AVENUE
N W
EST
NE
DG
E A
VE
NU
E
List of Recommendations: Provide adequate
clearance intervals Install mast-arm traffic
signals Relocate stop bars Post speed limit signs
downstream of the intersection
Upgrade lane markings Provide stop signs for
driveways Implement optimized PM
signal timing
W. Michigan Ave. and N. Westnedge Ave.Proposed Diagram
Questions?