26 June 2006 Institute of Transportation Engineers District 6 Annual Meeting Intelligent Transportation Systems Lab Christopher M. Monsere Research Assistant Professor Dept of Civil and Environmental Engineering Portland State University Sirisha Kothuri, Kristin Tufte, Robert L. Bertini, School of Urban & Public Affairs Portland State University Enhancing Targeted Traffic Enforcement Efforts in Portland, Oregon Max Thorn Coffman and Christopher M. Monsere School of Urban Studies and Planning and Department of Civil & Environmental Engineering Intelligent Transportation Systems Laboratory Portland State University ITE District 6 June 26, 2006 Honolulu, Hawaii
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26 June 2006Institute of Transportation Engineers District 6 Annual Meeting Intelligent Transportation Systems Lab Christopher M. Monsere Research Assistant.
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26 June 2006Institute of Transportation Engineers District 6 Annual Meeting
Intelligent Transportation Systems Lab
Christopher M. MonsereResearch Assistant ProfessorDept of Civil and Environmental EngineeringPortland State University
Sirisha Kothuri, Kristin Tufte, Robert L. Bertini,
School of Urban & Public AffairsPortland State University
Enhancing Targeted Traffic Enforcement Efforts in Portland, Oregon
Max Thorn Coffman and Christopher M. Monsere
School of Urban Studies and Planning andDepartment of Civil & Environmental Engineering
Intelligent Transportation Systems LaboratoryPortland State University
ITE District 6June 26, 2006
Honolulu, Hawaii
26 June 2006Institute of Transportation Engineers District 6 Annual Meeting
Intelligent Transportation Systems Lab
Outline• Background
• Project motivation
• Methodology
• Preliminary results
• Next steps
26 June 2006Institute of Transportation Engineers District 6 Annual Meeting
Intelligent Transportation Systems Lab
Background• Strong community support for traffic safety• 2002 - Safe Communities Coalition formed
with grant from Oregon DOT• July 2003 - Portland City Council approved
the Portland Traffic Safety Coordination Council
• November 2003 - Community and School Traffic Safety Account created– Source: Annual increase in traffic fines
26 June 2006Institute of Transportation Engineers District 6 Annual Meeting
Intelligent Transportation Systems Lab
Community and School Traffic Safety Partnership
• Community-based, coalition-led effort to improve Portland's traffic safety
• Three focus areas– Bicycle and Pedestrian Safety– Safe Routes to School– Reducing Driver Error
• Strategic and Focused Enforcement
26 June 2006Institute of Transportation Engineers District 6 Annual Meeting
Intelligent Transportation Systems Lab
Distribution of Program ResourcesTotal ~$2.5 million
26 June 2006Institute of Transportation Engineers District 6 Annual Meeting
Intelligent Transportation Systems Lab
Current Enforcement Toolbox• Regular Traffic Division enforcement
• 10 officers
• Automated enforcement– Red light running cameras
• 6 cameras
– Photo radar• 4 vans
• Strategic and Focused Enforcement (SAFE)– Identified high crash intersections and corridors– Target missions and automated enforcement to
high risk areas
26 June 2006Institute of Transportation Engineers District 6 Annual Meeting
Intelligent Transportation Systems Lab
Map: PDOT
26 June 2006Institute of Transportation Engineers District 6 Annual Meeting
Intelligent Transportation Systems Lab
Project Objectives• Research new ways to identify SAFE
corridors– Use new GIS crash data– Try alternate network screening techniques
• Identify state-of-practice approaches
• Benefits– Allocate scarce staff and resources– Judges - maps as supporting evidence
26 June 2006Institute of Transportation Engineers District 6 Annual Meeting
Intelligent Transportation Systems Lab
Methodology• In GIS, attribute crashes to segments
– average 400 feet (short!)
• Compare crash performance– across similar street types– note: traffic volume data not available yet
• Identify segments “above average”
• Add “driver error analysis”
26 June 2006Institute of Transportation Engineers District 6 Annual Meeting
Intelligent Transportation Systems Lab
Normalizing for Street Class
Minor street
Other arterial
Primary arterial
Secondary arterial
Crashes per mile per year
(zero values excluded)
2.08
11.31
15.79
27.02
26 June 2006Institute of Transportation Engineers District 6 Annual Meeting
Intelligent Transportation Systems Lab
26 June 2006Institute of Transportation Engineers District 6 Annual Meeting
Intelligent Transportation Systems Lab
Driver Error Analysis
26 June 2006Institute of Transportation Engineers District 6 Annual Meeting
Intelligent Transportation Systems Lab
Techniques for identifying corridors
26 June 2006Institute of Transportation Engineers District 6 Annual Meeting