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The National Academies

NCHRP 20-07/Task 314 [Completed]

Recommended Protocol for Developing Crash Modification Factors
[ NCHRP 20-07 (Research for AASHTO Standing Committee on Highways) ]

  Project Data
Funds: $50,000
Research Agency: University of North Carolina Highway Safety Research Center
Principal Investigator: Daniel Carter
Effective Date: 3/29/2011
Completion Date: 2/28/2012

OBJECTIVE: The objective of this research is to prepare a recommended protocol for the development of CMFs to assure their accuracy and their suitability for use in planning safety improvement programs. The protocol would establish acceptable and consistent methods for developing CMFs that are statistically rigorous, are free of biases, will meet the CMF quality criteria for inclusion HSM and the FHWA CMF Clearinghouse.

STATUS: The revised final report was received in July 2012 and subsequently forwarded to AASHTO.

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