Evaluation of Safety Improvement Projects and Countermeasures

The Highway Safety Improvement Program (HSIP) is a core Federal-aid, state-administered program in which each state is required to develop and establish planning, implementation, and evaluation processes. The goal of evaluation activities is to determine if highway safety improvements are achieving the desired results and the investments are worthwhile. The expectation is for the evaluation results to continuously feed the planning and implementation components of the HSIP. Most states, including Texas, use simple evaluation methods that do not compensate for regression-to-the-mean effects and assume that possible safety changes are due solely to safety improvements without considering other external factors. This project will develop a framework and supporting tools that will incorporate modern data-driven methods for evaluating the safety and cost effectiveness of individual improvement projects, as well as assess the safety performance of groups of similar types of projects, also known as countermeasures. The project will also test the tools by determining the effectiveness of HSIP projects and countermeasures that have been implemented in Texas over the last few years. Enhanced HSIP evaluation processes will allow TxDOT to allocate HSIP funds in a cost-effective manner that promote maximum return on investment and apply limited safety resources more efficiently by saving time and costs.


  • English


  • Status: Active
  • Contract Numbers:


  • Sponsor Organizations:

    Texas Department of Transportation

    125 E. 11th Street
    Austin, TX  United States  78701-2483
  • Project Managers:

    Jensen, Darrin

  • Performing Organizations:

    Texas Transportation Institute

    Texas A&M University System
    3135 TAMU
    College Station, TX  United States  77843-3135
  • Principal Investigators:

    Tsapakis, Ioannis

  • Start Date: 20170901
  • Expected Completion Date: 20190831
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01648626
  • Record Type: Research project
  • Source Agency: Texas Department of Transportation
  • Contract Numbers: 0-6961
  • Files: RiP, STATEDOT
  • Created Date: Oct 20 2017 11:52AM