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:
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Corporate Authors:
University of Missouri, Columbia
Columbia, MO United States 65211Wayne State University
College of Engineering
Detroit, MI United States 48202Federal 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