Investigation of Road and Roadside Design Elements Associated with Elderly Pedestrian Safety

This project will investigate factors associated with senior pedestrian crash severity relative to non-seniors and the extent to which observations of conflict severity between senior pedestrians and vehicles are adequate indicators of the actual crash severity. The project will also explore the sensitivity of the findings to the size of sample drawn from a large database consisting of all crashes involving pedestrians in Connecticut from 1995 to 2011. The project will draw several repeated random samples of crashes involving senior pedestrians and non-senior pedestrians from the large crash database, merge each of these samples against a database containing the road and roadside characteristics, fit suitable regression, and then use meta-analysis methods to combine information from the repeated samples to obtain a robust covariate selection. Conflicts between pedestrians and vehicles will be observed using a variation of the Swedish Traffic Conflicts Technique, and classified by estimated age of the pedestrian and the severity of the conflict. Observations will be made at locations specifically targeted for having characteristics found to be associated with senior pedestrian crash severity relative to non-seniors. The project proposes a statistical test of association between conflict severity and crash severity based on data obtained through the field observation and sampled from the crash database. The project also proposes a hierarchical regression of crash severity on road and road characteristics as well as conflicts severity, where conflicts severity is itself modeled as a function of relevant predictors. The project will acquire data from the Connecticut Crash Data Repository now being developed at the University and share results with the users of the Repository through a Living Laboratory arrangement.


  • English


  • Status: Completed
  • Contract Numbers:



  • Sponsor Organizations:

    Research and Innovative Technology Administration

    Department of Transportation
    1200 New Jersey Avneue, SE
    Washington, DC  United States  20590
  • Performing Organizations:

    New England University Transportation Center

    Massachusetts Institute of Technology
    77 Massachusetts Avenue, Room 40-279
    Cambridge, MA  United States  01239
  • Start Date: 20120101
  • Expected Completion Date: 0
  • Actual Completion Date: 20160131
  • Source Data: RiP Project 33391

Subject/Index Terms

Filing Info

  • Accession Number: 01489781
  • Record Type: Research project
  • Source Agency: New England University Transportation Center
  • Contract Numbers: DTRT12-G-UTC01, UCNR24-30
  • Files: UTC, RiP
  • Created Date: Aug 15 2013 1:01AM