A Systems-Level Analysis of Left-Turning Vehicle-Pedestrian Crashes

Left-turning vehicle-pedestrian crashes have long been dangerous for pedestrians in situations when drivers should be yielding the right of way. They outnumber right-turning vehicle-pedestrian crashes by a factor of 3 to 1 and are grossly overrepresented in terms of crash severity. If a driver does not properly yield, it is easy for traffic engineers to tally such crashes among the more than 90% of crashes that are attributed to human error. Yet, an accumulation of challenging conditions for a driver suggests that left-turning vehicle-pedestrian crashes are systematic problems and not random crashes caused by human error. Accordingly, the proposed project seeks to take a system-level approach to studying this crash type via an empirical, macroscopic analysis of eight cities across multiple years. This includes: (1) determining where this crash type is over- or under-represented while controlling for the level of pedestrian activity; and (2) statistically evaluating what combination of signal, design, and/or policy approaches associates with better or worse safety outcomes while also accounting for crash migration. Instead of focusing solely on signalization solutions, as is common in the existing literature, the intent is to shed light on how cities can employ a combination of approaches.


  • English


  • Status: Active
  • Funding: $206346
  • Contract Numbers:


  • Sponsor Organizations:

    Office of the Assistant Secretary for Research and Technology

    University Transportation Centers Program
    Department of Transportation
    Washington, DC  United States  20590
  • Managing Organizations:

    Mountain-Plains Consortium

    North Dakota State University
    Fargo, ND  United States  58108
  • Project Managers:

    Tolliver, Denver

  • Performing Organizations:

    Dept. of Civil Engineering

    University of Colorado Denver
    Denver, CO  United States 
  • Principal Investigators:

    Marshall, Wesley

    Janson, Bruce

  • Start Date: 20210326
  • Expected Completion Date: 20240731
  • Actual Completion Date: 0
  • USDOT Program: University Transportation Centers Program
  • Source Data: MPC-647

Subject/Index Terms

Filing Info

  • Accession Number: 01769397
  • Record Type: Research project
  • Source Agency: Mountain-Plains Consortium
  • Contract Numbers: 69A3551747108
  • Files: UTC, RIP
  • Created Date: Apr 13 2021 4:30PM