CMF Clearinghouse


CMF Clearinghouse Update: Winter 2021

In this issue:

  • Register for the CMF Clearinghouse Webinar
  • New CMF Clearinghouse Rating System
  • Featured Resource: FHWA Proven Safety Countermeasures 2021 Update
  • Featured CMFs
  • Submit a Study

The winter 2021 edition of CMF Update is the 24th edition of the CMF Clearinghouse e-newsletter. To subscribe, please visit To view archived issues, please visit


Register Today for the Free FHWA CMF Clearinghouse Webinar!

Looking Behind the Curtain: Spotlight on CMFs, DDSA and Decision-Making Processes in Wisconsin, North Carolina, and Beyond

Wednesday, December 8, 2021, 2:00-3:30 p.m. Eastern Time

Register to attend free webinar

Join transportation engineers, designers, and planners from across the country to learn about recent updates to the Federal Highway Administration (FHWA) Crash Modification Factors (CMF) Clearinghouse, and how Wisconsin and North Carolina are incorporating CMFs into their data driven safety analysis and decision-making processes.


  • Karen Scurry, FHWA, will provide an overview of CMFs and the CMF Clearinghouse.
  • Taha Saleem, manager of the CMF Clearinghouse, will provide an overview of the recently updated CMF Clearinghouse rating system and the resources available for your assistance.
  • Kevin Scopoline, Wisconsin Department of Transportation (WisDOT), will present on WisDOTs Data Driven Safety Analysis (DDSA) efforts (and how they use CMFs from the CMF Clearinghouse in this process).
  • Brian Murphy and Daniel Carter, North Carolina Department of Transportation (NCDOT), and Joy Davis and Daniel Findley, North Carolina State University Institute for Transportation Research and Education, will present on the NCDOTs use of Safety Benefit Factors in the Strategic Transportation Investments process.
  • Raghavan Srinivasan, University of North Carolina Highway Safety Research Center, will present an overview of the various current and recently completed CMF related National Cooperative Highway Research Program (NCHRP) projects.

Continuing education: Attendees will be eligible to receive a certificate of completion for 1.5 hours that can be applied toward Professional Development Hours (PDH) credit, per State requirements.


New CMF Clearinghouse Rating System

The CMF Clearinghouse transitioned to the new CMF rating system on February 15, 2021. The CMF ratings continue to be presented on a 5-Star scale, along with the total score calculated using the new rating system. The Updated CMF Star Ratings page on the CMF Clearinghouse website lists several resources that provide an overview of the rating system transition and answers questions regarding what’s changed and what to expect as a result of this transition.

If you have specific questions regarding the new rating system, contact Karen Scurry ( or Taha Saleem (


Featured Resource: FHWA Proven Safety Countermeasures 2021 Update

FHWA’s Proven Safety Countermeasures initiative (PSCi) is a collection of countermeasures and strategies effective in reducing roadway fatalities and serious injuries on our Nation’s highways. The FHWA Office of Safety recently introduced nine NEW countermeasures to the PSCi. These additions enhance the already diverse set of safety strategies for State, local, regional, and tribal transportation professionals to consider implementing as part of their efforts to improve safety for all road users on the Nation's roadways.

In addition to adding nine new countermeasures and crosscutting strategies, this most recent iteration of the PSCi updates the existing proven safety countermeasure materials to add recent research and considerations. Widespread implementation of proven safety countermeasures, where appropriate, can serve to accelerate the achievement of local, State, and national safety goals. The updated Proven Safety Countermeasures website is the one-stop shop for resources and information to advance the now 28 countermeasures in your jurisdiction.


Featured CMFs 

Crash Modification Factor (CMF) Value: 1.045 (for all intersection crashes)

Star Quality Rating: 2 Stars


Crash Modification Factor (CMF) Value: 0.763 (for all crashes)

Star Quality Rating: 4 Stars


Submit a Study 

The CMF Clearinghouse welcomes CMF study submissions to be included in its searchable database. If you wish to submit your CMF study, please email Karen Scurry at Be sure to search the Clearinghouse before submitting a new CMF as we may already have it listed. You may either send a link to a resource already existing on the web (preferred) or include it as an attachment in the email. Submissions might include published research studies that are not presented in the Clearinghouse, or state-specific CMFs that were developed as part of the Highway Safety Improvement Program. Please note that the Clearinghouse only includes CMFs that are derived and presented in the studies by the authors.

Funded by the U.S. Department of Transportation Federal Highway Administration 
and maintained by the University of North Carolina Highway Safety Research Center.

For more information, contact Karen Scurry, FHWA Office of Safety Programs 609-637-4207