Developing Generalized Linear Mixed Models For The Strategic Highway Safety Planning Process

Highway Safety has been identified as a very important problem worldwide. It has been found as the second cause of deaths in the world according to the United Nations (2010). In fact, only in the US, the effects of road crashes cost billions of dollars per year. The US Department of Transportation has established highway safety as one of their main priorities in their Action Plan. Several efforts are underway; however, in many states including Puerto Rico, most of the strategies implemented have a reactive or short-term planning approach. Such approach has generated some improvements in the current system, however, a proactive approach is necessary to consider highway safety aspects in the decision making process from the beginning of the generation of planning alternatives. The proposed research project will fit Generalized Linear Mixed Models (GLMM) to be used for the incorporation of highway safety in the strategic planning process. These GLMM have several advantages to predict crash rates including that they incorporate not only a set of explanatory variables but also random effects present in the system, which helps to explain possible correlation in the data. Therefore, these types of models offer great versatility in the modeling of crash rates and its related factors


  • English


  • Status: Completed
  • Funding: $91219.00
  • Contract Numbers:


  • Sponsor Organizations:

    Research and Innovative Technology Administration

    University Transportation Centers Program
    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    University Transportation Research Center

    City College of New York
    Marshak Hall, Suite 910, 160 Convent Avenue
    New York, NY  United States  10031
  • Project Managers:

    Eickemeyer, Penny

  • Performing Organizations:

    University of Puerto Rico, Mayaguez

    University of Puerto Rico - Mayaguez Campus
    Mayagüez, PR  United States  00681
  • Principal Investigators:

    Valdés-Díaz, Dr. Didier M.

  • Start Date: 20140401
  • Expected Completion Date: 20160630
  • Actual Completion Date: 20161231
  • Source Data: RiP Project 36226

Subject/Index Terms

Filing Info

  • Accession Number: 01562517
  • Record Type: Research project
  • Source Agency: University Transportation Research Center
  • Contract Numbers: 49198-12-26
  • Files: UTC, RIP
  • Created Date: Apr 30 2015 1:00AM