Breakout Session 6: Protecting our Vulnerable Users 2015 Traffic Safety Conference by Joan Hudson, Associate Research Engineer, Texas A&M Transportation Institute

1. Presented by:
Joan G. Hudson, P.E.
Texas A&M
Transportation
Institute
Texas Traffic
Safety Conference
June 9, 2015
PEDESTRIAN AND BICYCLE
CRASH ANALYSIS TOOL
(PBCAT)

2.  Concerns about
pedestrian/bicyclist safety
 TxDOT CRIS
 3 files: crash, person, unit
 Lacks details for ped/bike
crashes
 Crash reports acquired
 Entered into PBCAT
 2007-2014 database
 K=fatal, A=incapacitating,
B=non-incapacitating
 Reported crashes
BACKGROUND

3. AUSTIN DISTRICT
REPORTED KAB PEDESTRIAN AND BICYCLE CRASHES
0
100
200
300
400
500
600
700
2007 2008 2009 2010 2011 2012 2013 2014
Pedestrian KAB Crashes
Bicycle KAB Crashes
Total Pedestrian and
Bicycle KAB Crashes

4.  CRIS doesn’t have details
 Circumstance of the crash–like
walking along or crossing roadway
 Pedestrian action at the time of
the crash – like dart out, multiple
threat
 Presence of facilities – like
sidewalks, shoulders
 Position description – where crash
occurred like in the crosswalk
 Land use surrounding crash
 Recommended in FHWA
documents
WHY USE PBCAT?

5. PBCAT DATA ENTRY

6. GOOGLE EARTH

7. INITIAL POSITION

8. PEDESTRIAN CRASH LOCATION

9. BICYCLE CRASH LOCATION

10. EXAMPLES OF PEDESTRIAN CRASH TYPES

11. EXAMPLES OF BICYCLE CRASH TYPES

12. CIRCUMSTANCES OF PEDESTRIAN CRASH

13. CIRCUMSTANCES OF BICYCLE CRASH

14. Pedestrian Crashes
Austin, Texas
2010-2014

15. Bicycle Crashes
Austin, Texas
2010-2014

16. PEDESTRIAN CRASH FAULT

17. BICYCLE CRASHES BY FAULT
0%
10%
20%
30%
40%
50%
60%
70%
2007 2008 2009 2010 2011 2012 2013 2014
Bicyclist at Fault Motorist at Fault Both at Fault Neither at Fault

18. CRASH LOCATION DESCRIPTION
PEDESTRIAN CRASHES
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
2007 2008 2009 2010 2011 2012 2013 2014
Non-Intersection Non-roadway Intersection or Intersection-Related

19. CRASH LOCATION DESCRIPTION
BICYCLE CRASHES
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
2007 2008 2009 2010 2011 2012 2013 2014
Non-intersection Non-roadway Intersection or Intersection Related

20. CRASH CIRCUMSTANCES
PEDESTRIAN CRASHES
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
2007 2008 2009 2010 2011 2012 2013 2014
Motorist Turn/Merge -
Other/Unknown
Motorist Right Turn on Red -
Perpendicular Paths
Motorist Right Turn -
Perpendicular Paths
Motorist Right Turn on Red -
Perpendicular Paths
Motorist Right Turn - Parallel
Paths
Motorist Left Turn -
Perpendicular Paths
Motorist Left Turn - Parallel
Paths
Motorist Failed to Yield

21. CRASH CIRCUMSTANCES
BICYCLE CRASHES
0%
10%
20%
30%
40%
50%
60%
70%
2007 2008 2009 2010 2011 2012 2013 2014
Motorist Failed to Yield -
Sign-Controlled
Intersection
Motorist Overtaking
Bicyclist
Motorist Right
Turn/Merge
Motorist Failed to Yield -
Midblock
Motorist Left
Turn/Merge
Motorist Failed to Yield -
Signalized Intersection

22. PEDESTRIAN POSITION
DESCRIPTION
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
2007 2008 2009 2010 2011 2012 2013 2014
Other / Unknown
Unpaved Right-of-Way
Intersection proper
Driveway / Alley
Crosswalk area
Travel Lane
Non-roadway - Parking lot /
Other
Paved Shoulder / Bike Lane
/ Parking Lane
Sidewalk / Shared Use Path
/ Driveway Crossing

23. SPEED LIMIT – PEDESTRIAN CRASHES
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
2007 2008 2009 2010 2011 2012 2013 2014
Over 75 mph
66-75 mph
56-65 mph
46-55 mph
36-45 mph
26-35 mph
16-25 mph
0-15 mph

24. BICYCLE CRASHES BY BICYCLIST INITIAL
POSITION
0%
10%
20%
30%
40%
50%
60%
70%
2007 2008 2009 2010 2011 2012 2013 2014
Bike Lane / Paved
Shoulder
Driveway / Alley
Multi-use Path
Sidewalk /
Crosswalk/
Driveway Crossing
Travel Lane
Non-roadway

25. BICYCLE FACILITY PRESENCE
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
2007 2008 2009 2010 2011 2012 2013 2014
Combined
Pkg/Bike Lane
Paved Shoulder
Bicycle Lane
Wide Curb Lane
Not Applicable

26.  PBCAT is good:
 Crash typing
 Crash circumstances
 Existing conditions
 Allows customization of the
categories
 Need to consider:
 Subjectivity involved
 Add what you don’t get from
your current database (i.e. CRIS)
to reduce data entry time
LESSONS LEARNED

27.  More QA/QC
 Use the 2007-2014
data for the crash
prediction tool
 Make data results
available for area
partners
NEXT STEPS

28.  Joan G. Hudson, P.E.,
j-hudson@tamu.edu
512-407-1112
 Boya Dai, AICP
b-dai@tti.tamu.edu
512-407-1168
CONTACT INFORMATION