About the CMF Clearinghouse

The following resources provide information about the CMF Clearinghouse, including a user guide for new users, webinars, e-newsletters, and frequently asked questions.

CMF Clearinghouse User Guide
New to the Clearinghouse? Walk through the CMF Clearinghouse User Guide to see information about crash modification factor (CMF) basics and guidance on how to conduct searches on the CMF Clearinghouse. It also provides advanced tips and functionality for more experienced users.

CMF Clearinghouse Brochure
See a brochure presenting the CMF Clearinghouse

CMF Update (e-Newsletter)
Read past editions of CMF Update, a free, semiannual, online publication of the Crash Modification Factors (CMF) Clearinghouse.

CMF Clearinghouse Webinars
Watch recordings of past webinars presented by the CMF Clearinghouse.

Find answers to Frequently Asked Questions.

Relationship to the Highway Safety Manual
Find out how the CMF Clearinghouse is related to the HSM.

In the News
Read articles written about the Clearinghouse.

The information contained in the Crash Modification Factors (CMF) Clearinghouse is disseminated under the sponsorship of the U.S. Department of Transportation in the interest of information exchange. The U.S. Government assumes no liability for the use of the information contained in the CMF Clearinghouse. The information contained in the CMF Clearinghouse does not constitute a standard, specification, or regulation, nor is it a substitute for sound engineering judgment.