Improving Management and Analysis of Highway Safety Improvement Projects through a Statewide Web-based Information System

A benefit-cost analysis is usually performed before a proposed safety improvement project is implemented to ensure that the project will have a high possibility of resulting in an overall economic benefit. The benefit of a project is estimated based on the projected crash reduction as a result of the project improvement, which is calculated as the existing number of crashes without the project multiplied by a crash reduction factor (CRF). Thus, a CRF is simply an estimate of the average percentage of crashes that can be expected to reduce as a result of a project implementation. In the United States, CRFs have generally been developed by individual state Departments of Transportation based on local historical safety improvement projects. In Florida, these historical data were maintained separately at various district offices of the Florida Department of Transportation (FDOT) in hardcopies, making it difficult to access the data for CRF development and updates. In addition, FDOT also did not have a system that could be used to automate the time-consuming benefit-cost analysis and to evaluate the effectiveness of implemented projects. This paper describes a web-based information system designed to provide a central location for various FDOT district offices to enter safety improvement project information. The centralized database makes it possible for FDOT to easily update CRFs as new improvement projects become available, to perform benefit-cost analysis in a highly automated manner, and to quickly perform before-after analysis to assess the effectiveness of implemented projects.

  • Corporate Authors:

    Institute of Transportation Engineers (ITE)

    Washington, DC  United States 

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Gan, Albert
    • Wang, Haifeng
    • Liu, Kaiyu
  • Conference:
  • Publication Date: 2008


  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; References;
  • Pagination: 19p
  • Monograph Title: Compendium of Technical Papers. ITE 2008 Technical Conference and Exhibit, March 30-April 2, 2008, Miami, Florida

Subject/Index Terms

Filing Info

  • Accession Number: 01109052
  • Record Type: Publication
  • Files: TRIS, USDOT
  • Created Date: Aug 20 2008 2:01PM