CMF Update (enewsletter) Archives

CMF Update is a free, semiannual, online publication of the Crash Modification Factors (CMF) Clearinghouse. To receive CMF Update via email, please subscribe HERE.

Fall 2024

  • Register Now for Free FHWA CMF Clearinghouse Webinar (and 1.5 PDH Credits)
  • New Domain, Same Great Resource
  • Improved Filter Functionality
  • Got State Selected CMFs?
  • Safe System Project-Based Alignment Framework and Tool
  • Application of CMFs in Transportation Impact Analysis
  • Call for Data for Evaluations of Low-Cost Safety Improvements-Pooled Fund Study
  • Featured CMFs
  • Submit a Study

Spring 2024

  • RECAP: 2023 CMF Clearinghouse Annual Webinar
  • Recent Updates: CMF Most Wanted List
  • Recent Updates: Improved Filter Functionality
  • New Tool: SPF-R Tool
  • Reminder: State CMF List
  • Featured CMFs
  • Submit a study

Summer 2023

  • Did you miss the CMF Clearinghouse Annual Webinar?
  • Upcoming Change: New Domain and Website Improvements
  • Upcoming Change: Comments on Older Studies That Did Not Explicitly Report CMFs
  • Featured CMFs
  • Submit a study

Winter 2022

  • Register for the CMF Clearinghouse Webinar
  • Recent Website Updates
  • Coming Soon: A New Course from the National Highway Institute (NHI)
  • Featured CMFs
  • Submit a study

Summer 2022

  • Cite the Site! Always Share the CMF ID When Referencing a Specific CMF
  • Database Update: Improved Data Standards
  • Did you miss the CMF Clearinghouse Annual Webinar?
  • Featured Resource: State Selected CMF Lists
  • Highway Safety Manual Second Edition (HSM2) Implementation Pooled Fund Study
  • Featured CMFs
  • Submit a study

Winter 2021

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

Summer 2021

  • CMF Clearinghouse Rating System Transition
  • Resource: Countermeasure Service Life Guide
  • Resource: Selecting Projects and Strategies to Maximize HSIP Performance
  • Featured CMFs
  • Submit a study

Winter 2020

  • Upcoming CMF Clearinghouse Rating System Transition
  • Missed the CMF Clearinghouse Annual Webinar
  • Featured Resource: Data-Driven Safety Analysis How-To Guides
  • Recent Website Updates: State SPF Calibration Efforts Summary and State Selected CMF Lists
  • Featured CMFs
  • Submit a study

Summer 2020

  • CMF Clearinghouse Facelift
  • Featured Resource: Roadway Safety Analysis Videos for CMFs
  • New feature: Transportation Systems Management and Operations (TSMO) Tags for TSMO related CMFs
  • Upcoming CMF Clearinghouse Rating System Changes
  • Featured CMFs
  • Submit a study

Winter 2019

  • Register for the CMF Clearinghouse Webinar
  • Featured Resource: DDSA Crash Tree Tool
  • Featured CMFs
  • Submit a study

Summer 2019

  • New feature: Data extracts in XML and XLS formats.
  • Featured Resource: Draft Final Report from NCHRP 17-63
  • Featured Resource: Capacity Analysis for Planning of Junctions (CAP-X) Tool
  • Featured Resource: Safety Performance for Intersection Control Evaluation (SPICE) Tool and User Guide
  • Featured CMFs
  • Submit a study

Winter 2018

  • Register Today for the Free FHWA CMF Clearinghouse Webinar!
  • Featured Resource: NHI Developing Quality CMFs course (spring)
  • Featured CMFs
  • Submit a study

Summer 2018

  • Featured resource: Crash Costs for Highway Safety Analysis
  • Missed the Webinar?
  • Featured CMFs
  • Featured FAQ: How can I refer to a specific CMF in the Clearinghouse?
  • Submit a study

Winter 2017

  • Register for the free webinar on December 12!
  • Conversion to KABCO severity scale
  • Featured CMFs
  • Featured resource: CMF Clearinghouse User Guide
  • Featured FAQ: Who uses CMFs and how are they used?
  • Submit a study

Summer 2017

  • Featured CMFs
  • Featured resource: Synthesis of Countermeasure Costs
  • Featured FAQ: Why do some CMFs show an increase in crashes?
  • Submit a study

Winter 2016

  • Free FHWA CMF Clearinghouse Webinar – Register Today!
  • Featured CMFs
  • Featured resource: Scale and Scope of Safety Assessment Methods in the Project Development Process
  • Featured FAQ: How do I choose between CMFs in my search results that have the same star rating but different CMF values?
  • Submit a study

Summer 2016

  • Register Today for an August TRB Webinar!
  • Interested in comparing CMFs side by side? Try the new CMF Comparison Tool
  • Featured CMFs
  • Featured Resources: Summary of State SPF Calibration and Development Effort and Summary of State-Adapted HSM Part C Spreadsheet Tools

Winter 2015

  • Free FWHA CMF Clearinghouse Webinar -- Register today!
  • CMF Clearinghouse Website Reorganization
  • Featured CMFs
  • Featured Resource: State Selected CMFs List
  • Submit a Study

Summer 2015

  • Featured CMFs
  • Featured resources:
    • CMF Clearinghouse User Guide
    • Synthesis of Countermeasure Service Life and Crash Severity Cost User Guide
    • Summary of State SPF Calibration and Development Efforts as of July 2014
  • Featured FAQ: When applying two countermeasures at the same location, why would you ever multiply CMFs from both countermeasures?
  • Submit a study

Winter 2014

  • New FWHA CMF Clearinghouse webinar -- Register today!
  • Featured CMFs
  • Featured resource: Application of Crash Modification Factors course
  • Featured FAQ: How is the star quality rating different from the notations in the HSM?
  • Submit a study

Summer 2014

  • New Clearinghouse features make searching more efficient
  • Featured CMFs
  • Featured resource: Tips for building high-quality CMFs
  • Featured FAQ: How do the Clearinghouse crash severity terms relate to the KABCO injury scale?
  • Submit a study

Winter 2013

  • CMF Clearinghouse webinar -- Register today!
  • Featured CMFs
  • Featured resource: Countermeasures that Work
  • Featured FAQ: How can I refer to a specific CMF in the Clearinghouse?
  • Submit a study

Summer 2013

  • Clearinghouse launches improved search tool
  • Featured CMFs
  • Featured resource: CMFs in Practice
  • Featured FAQ: How are CMFs added to the Clearinghouse and what is the process for review?
  • Submit a study

Winter 2012

  • Free CMF Clearinghouse webinar – register today!
  • Focus groups identify potential improvements to CMF Clearinghouse
  • Featured CMFs
  • Featured FAQ: How are states using the CMF Clearinghouse?
  • CMFs in Practice

Summer 2012

  • Featured CMFs
  • Featured Resource: Updated NHI Course on Science of CMFs
  • Featured FAQ: How do I choose between CMFs in my search results that have the same star rating but different CMF values?

Winter 2011

  • Featured CMFs
  • Featured Resource: New Guide on Developing CMFs
  • Featured FAQ: Who uses CMFs and how are they used?

Summer 2011

  • Featured CMFs
  • Featured Resource: Highway Safety Manual Part C Quick Reference Guide
  • Featured FAQ: How can I download CMFs from the Clearinghouse?

Fall 2010

  • Featured CMFs
  • Featured Resource: SafetyAnalyst
  • Featured FAQ: How can I apply multiple CMFs?

Summer 2010

  • CMF-Related Trainings Available through NHI
  • Featured Resource: Highway Safety Manual
  • Featured FAQ: What's the Difference between an CRF and a CMF?