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.