Which resource contains an abundance of Crash Modification Factors (CMFs) for roadway design scenarios?

• A. CMF Clearinghouse
• B. CMF Compendium
• C. Crashes Database
• D. Roadway CMF Library

Answer: (A)

CMFs tell you how a roadway design change is likely to affect crash frequency. The CMF Clearinghouse is the best source for a wide, centralized collection of CMFs specifically for roadway design scenarios. It’s a searchable repository that brings together CMFs from many studies, covering a broad range of design interventions, road types, crash types, severities, and contexts. Each entry includes information on what the intervention is, where and how it applies, and any caveats, so you can choose CMFs that match your project and apply them correctly. Because it aggregates numerous studies and is regularly updated, it offers the most comprehensive starting point for evaluating safety improvements. Other resources may be more limited in scope or focus on different data types, but they don’t match the Clearinghouse in breadth and official centralization.