Development and Application of Work Zone Crash Modification Factors

Crash modification factor (CMF) provides the expected change in crash frequency due to the implementation of a countermeasure or a change in a particular site condition. State and local transportation agencies determine CMF values by utilizing the Highway Safety Manual (HSM). The HSM provides CMF values for various types of facilities and treatments. However, the HSM’s coverage of work zone-related CMF values is limited. This report introduces practitioners to: the procedure for evaluating work zone countermeasures using existing CMFs and the procedures for developing new work zone CMFs. Once derived, CMFs can be used for selecting countermeasures and scheduling lane closures.

• Record URL:
  https://www.workzonesafety.org/files/documents/training/fhwa_wz_grant/wsu_umc_wz_cmf_guide.pdf
• 
• Corporate Authors:

  University of Missouri, Columbia

  Columbia, MO  United States  65211

  Wayne State University

  College of Engineering
  Detroit, MI  United States  48202

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Edara, P
  • Sun, Chao
  • Brown, H
  • 0000-0003-1473-901X
  • Rahmani, R
  • Datta, T
• Publication Date: 2016-8

Language

• English

Media Info

• Media Type: Digital/other
• Features: Appendices; Figures; Glossary; Photos; References; Tables;
• Pagination: 19p

Subject/Index Terms

• TRT Terms: Countermeasures; Crash modification factors; Crash rates; Evaluation; Highway safety; Mathematical prediction; Work zone safety; Work zones
• Identifier Terms: Highway Safety Manual; Safety Performance Functions
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 01608580
• Record Type: Publication
• Report/Paper Numbers: DTFH61-13-RA-00019
• Files: TRIS, ATRI, USDOT
• Created Date: Aug 29 2016 11:10AM