User's Guide for Crash Reduction Analysis System Hub (CRASH)

Crash reduction factors (CRFs) are used to estimate the expected reduction in crashes that will occur during a given period as a result of implementing a proposed safety improvement project. Development of CRFs based on the before-and-after method requires the use of historical safety improvement projects. While the Florida Department of Transportation maintains a comprehensive crash database for the state roadway system, it does not have a central database for safety improvement projects. Consequently, historical data for safety improvement projects are maintained separately at various district offices in various formats and are not easily accessible for both CRF development and safety program evaluation. This user's guide provides instructions on the use of a user-friendly web application designed to systematically maintain statewide safety improvement project data to facilitate the continual process of updating CRFs. The system, called Crash Reduction Analysis System Hub (CRASH), also provides capabilities to perform benefit-cost analysis using up-to-date CRFs as well as perform before-after analyses to evaluate the effectiveness of safety programs.


  • English

Media Info

  • Media Type: Print
  • Features: Figures;
  • Pagination: 36p

Subject/Index Terms

Filing Info

  • Accession Number: 01002000
  • Record Type: Publication
  • Report/Paper Numbers: FDOT 99700-3596-119
  • Contract Numbers: BD015-04
  • Created Date: Aug 5 2005 10:21AM