along with guidance and resources on using CMFs in road safety practice.

What are CMFs?
A crash modification factor (CMF) is used to compute the expected number of crashes after implementing a countermeasure on a road or intersection.
LEARN MORE
NEWSLETTER
Hot off the press! The CMF Clearinghouse Update: Winter 2021 enewsletter is now available. Read for the latest on the Clearinghouse's additions and activities.
READ NOW
Updated Ratings
The CMF Clearinghouse transitioned to the CMF rating criteria developed as part of the NCHRP 17-72 project for the 2nd edition of the Highway Safety Manual on February 15, 2021.
LEARN MORE