Effect of Primary and Secondary Crashes: Identification, Visualization, and Prediction

Quarterly Reports Other Documents Final Report
Final Report

Primary Investigators

Dr. Sabya Mishra
Assistant Professor
University of Memphis


We propose to develop individual models for incident duration, secondary crash occurrence, associated delays, and queue length and apply those to one or two urban cities in TN. We will also propose a framework for the development of an online Hot Spot Visual Tool (HSVT) to identify most hazardous locations or hot spots and a crash identification toolbox (CIT) to obtain specifics of primary and secondary crashes from archived crash data. In combination, the proposed three models can help in predicting short-term primary and secondary crash durations, the probable occurrence of secondary crashes, delay and associated queue length. The scope of the project will also include identification of hotspots and provide strategies to improve truck operations against accidents.


The objective of this study is to clearly define primary and secondary crashes, understand and analyze the occurrence and nature of such crashes, and develop tools that can comprehensively analyze primary and secondary crashes on major truck routes at the planning and operational levels, ultimately contributing to safe and efficient movement of traffic flow.


  1. Literature review (2 months)
  2. Data analysis  (2 months)
  3. Model development for incident duration, secondary crash occurrence, associated delays, and queue length (4 months)
  4. Case studies development (2 months)
  5. HSVT and CIT framework (1 month)
  6. Final report (1 month)

Project Information

  • Duration: 12 months
  • Dates: 01/01/2014 – 12/31/2014
  • Budget: $150,000 (match funds)
  • Student Involvement: Three graduate students
  • Modal Orientation: Highway
  • Project ID: CFIRE 09-05
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