Vehicle on Shoulder and Crash – Correlation or Causation

KYTC partners with Waze through the Connected Citizens Program to access traffic information reported by Waze users, including crashes, traffic jams, potholes, objects in the road, vehicles stopped on shoulders, and other hazards. KYTC has used this information to enhance the situational awareness of travelers and to support real-time incident management. After reviewing traffic data alongside these crowd-sourced reports, the ITS Branch of KYTC has observed a frequent chain of events that appear to be in the following sequence: Vehicle on Shoulder, speed drops to well below free-flow condition, and then reports of accident. A better understanding of the correlation and/or causation among these alerts can help KYTC develop operational strategies and policies to prevent future crashes and fatalities.


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    • Status: Completed
    • Funding: $80000
    • Contract Numbers:

      KYSPR 20-598

    • Sponsor Organizations:

      Kentucky Transportation Cabinet

      200 Mero Street
      Frankfort, KY  United States  40622
    • Performing Organizations:

      University of Kentucky, Lexington

      Kentucky Transportation Center College of Engineering, 176 Raymond Building
      Lexington, KY  United States  40506-0281
    • Principal Investigators:

      Chen, Mei

    • Start Date: 20190701
    • Expected Completion Date: 20200630
    • Actual Completion Date: 0

    Subject/Index Terms

    Filing Info

    • Accession Number: 01711195
    • Record Type: Research project
    • Source Agency: University of Kentucky, Lexington
    • Contract Numbers: KYSPR 20-598
    • Files: RIP, STATEDOT
    • Created Date: Jul 17 2019 1:37PM