Ensuring Consistency in Decision Making: Why and How Your State Should Develop a State CMF List

Federal Highway Administration2016PDFBriefUnited States. Federal Highway Administration. Office of SafetyUnited States. Federal Highway Administration. Office of SafetyUnited StatesCrash modification factorsDecision makingCrashesCountermeasuresBenefit cost analysisFHWA-SA-17-023A Crash Modification Factor (CMF) is a numerical value that shows the expected change in crashes after implementing a countermeasure. It provides a quantitative estimate to replace anecdotal estimates of the safety effect of the countermeasure in benefit/cost analyses or project funding requests.95