Webinars

Understanding & Navigating the CMF Clearinghouse Rating System Changes For Researchers

View a recording of the webinar to the left. To download a copy of the webinar slides, select the links below.

Presentation Slides (.pptx 7.6mb)

The Federal Highway Administration (FHWA) Crash Modification Factors (CMF) Clearinghouse transitioned to the CMF rating criteria developed as part of the NCHRP 17-72 project for the Update of CMFs for the Highway Safety Manual in February 2021.

Join transportation engineers, designers, and planners from across the country to learn more about the rating system changes. This webinar will provide researchers an opportunity to learn more about the rating system changes, how to navigate these changes on the CMF Clearinghouse website, where to find the old ratings, details of the new rating criteria, how to ensure your upcoming research work produces highly rated CMFs (including tools available on the CMF Clearinghouse for your assistance), and what you can do to minimize the impacts of this transition to your work.

Presenters:

  • Karen Scurry, Federal Highway Administration
  • Taha Saleem, manager of the CMF Clearinghouse
  • Dave Petrucci, Federal Highway Administration

 

Understanding & Navigating the CMF Clearinghouse Rating System Changes For Practitioners

View a recording of the webinar to the left. To download a copy of the webinar slides, select the links below.

Presentation Slides (.pptx 6.5mb)

The Federal Highway Administration (FHWA) Crash Modification Factors (CMF) Clearinghouse transitioned to the CMF rating criteria developed as part of the NCHRP 17-72 project for the Update of CMFs for the Highway Safety Manual in February 2021.

Join transportation engineers, designers, and planners from across the country to learn more about the rating system changes. This webinar will provide practitioners an opportunity to learn more about the rating system changes, how to navigate these changes on the CMF Clearinghouse website, where to find the old ratings, tools available on the CMF Clearinghouse website to provide guidance on the use of CMFs, and how these changes could impact your work (and what you can do to minimize the impacts of this transition to your work).

Presenters:

  • Karen Scurry, Federal Highway Administration
  • Jerry Roche, Federal Highway Administration
  • John McFadden, Federal Highway Administration
  • Dave Petrucci, Federal Highway Administration

 

Understanding the Upcoming CMF Rating Transition and Exploring Real-World Applications of CMFs

View a recording of the webinar to the left. To download a copy of the webinar slides, select the links below.

Presentation Slides: Overview (.pptx 6.9mb)

Presentation Slides: CMF Clearinghouse Rating Transition (.pptx 298kb)

Presentation Slides: Caltrans Interim Guidance on LD-IGR Safety Analysis and CMF Clearinghouse (.pptx 3.5mb)

Presentation Slides: Updating TxDOT Workcodes (.pptx 1.7mb)

Presentation Questions and Answers (.pdf 274kb)

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, upcoming CMF rating transition, and how Caltrans and TxDOT are incorporating CMFs into their analysis and decision making.

Presenters:

  • Karen Scurry, Federal Highway Administration, will provide an overview of CMFs and the CMF Clearinghouse.
  • Taha Saleem, manager of the CMF Clearinghouse, will discuss the CMF Clearinghouse transition to the CMF rating criteria developed as part of the NCHRP 17-72 project for the Update of CMFs for the Highway Safety Manual and what's going to change.
  • Troy Bucko, California Department of Transportation (Caltrans), will discuss how Caltrans is Incorporating Data Driven Safety Analysis in Traffic Impact Studies (and how they use CMFs from the CMF Clearinghouse in this process).
  • Srinivas Geedipally, Texas A&M Transportation Institute (TTI), will present on the process used by TTI to assist TxDOT in the review and development of the CMFs used for HSIP projects.

 

CMF How-Tos: Planning, Multiple Treatments and API - Oh My!

View a recording of the webinar to the left. To download a copy of the webinar slides, select the links below.

Presentation Slides: Intro (.pptx 1.4mb)

Presentation Slides: Overview (.pptx 1.2mb)

Presentation Slides: Application of Multiple CMFs (.pptx 3.7mb)

Presentation Slides: Using CRFs and Federal Lands Highway (.pptx 12.4mb)

Presentation Slides: Use Case - CTDOT/UCONN CRSMS (.pptx 66.7mb)

Join transportation engineers, designers and planners from across the country to learn about recent updates to the Federal Highway Administration (FHWA) CMF Clearinghouse, resources on combining CMFs for multiple treatments, and how FHWA Federal Lands and the University of Connecticut are incorporating CMFs into their analysis and tools.

Presenters:

  • Taha Saleem, manager of the CMF Clearinghouse, and Karen Scurry, Federal Highway Administration, will provide an overview of CMFs and the CMF Clearinghouse.
  • Frank Gross, VHB, will present resources on combining CMFs for multiple treatments including the issue of independence.
  • Matthew Hinshaw, Federal Highway Administration, Office of Federal Lands Highway, will discuss how he is using CMFs for project planning and identification at Federal Lands.
  • Shanshan Zhao, University of Connecticut, will cover how the University is able to link to the CMF Clearinghouse through the new API, as well as how they are using this functionality as part of their new safety management system.

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.

Questions?
Contact Taha Saleem (saleem@hsrc.unc.edu) or Karen Scurry (karen.scurry@dot.gov) for more information.

 

CMF Tune Up: Resources, methods and real-world applications of CMFs | Dec. 17, 2018

Due to technical issues, a recording of this webinar is not available. To download a copy of the webinar slides, select the links below.

Presentation Slides: Intro and Overview (.pptx 77kb)

Presentation Slides: Resources and Course (.pptx 838kb)

Presentation Slides: CMF Guide and PennDOT Tool (.ppptx 2.7Mb)

Presentation Slides: CA HSIP Program and Benefit-Cost Analysis (.ppptx 2.5Mb)

Presentation Slides: Misapplications of CMFs (.ppptx 182kb)

Join transportation engineers, designers and planners from across the country to learn how to use the most recent updates to the Federal Highway Administration's CMF Clearinghouse, resources on how to select the best CMF, and how Pennsylvania and California incorporate CMFs into their tools and programs.

  • Daniel Carter, manager of the CMF Clearinghouse, will share resources available for selecting the best CMF and an overview of the CMF development course.
  • Jason Hershock, Pennsylvania Department of Transportation, will discuss how the Pennsylvania CMF Guide is incorporated into PennDOT's tools.
  • Robert Peterson and Richard Ke, California Department of Transportation, will cover how Caltrans manages the Local Highway Safety Improvement Program. They will provide an overview of their program and the methodology and tools they have developed that work well for both applying countermeasures at spot locations and systemically.
  • Daniel Carter and Karen Scurry, U.S. Department of Transportation's Federal Highway Administration, will provide examples of the misapplications of CMFs by state and local agencies.

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.

 

The Right Fit: Finding and Applying the Right CMF for the Job | Dec. 12, 2017

View a recording of the webinar to the left. To download a copy of the webinar slides, select the links below.

Presentation Slides: New Jersey's current practice for using safety performance functions and CMFs (.pdf 4.3mb)

Presentation Slides: How to make use of the features of the CMF Clearinghouse (screen shots) (.pdf 670kb)

Presentation questions and answers (.pdf 147kb)

 

Learn about New Jersey's current practice for using safety performance functions and crash modification factors. Sophia Azam and her colleagues at New Jersey DOT will discuss how they use these tools for HSIP project selections and enhancements, and how they handle situations when site conditions do not perfectly match the prediction models.

Do you ever feel like there's so much information on the Clearinghouse that you have trouble finding exactly what you need? Daniel Carter will discuss how to select a CMF and will demonstrate how to make use of the features of the CMF Clearinghouse to sort through hundreds of countermeasures and CMFs to find the most appropriate CMF for your situation.

 

Seeing the Value: Using CMFs to Calculate the Benefits of Safety Improvements | Dec. 6, 2016

View a recording of the webinar to the left. To download a copy of the webinar slides and answers to questions asked during the webinar, select the links below.

Presentation Slides: Solutions for Saving Lives on Texas Roadways (.pdf 1366kb)

Presentation Slides: Highway Safety Improvement Program Systemic Application (.pdf 721kb)

Presentation Slides: Why and How Your State Should Develop a State CMF List (.pdf 44kb)

 

Join transportation engineers, designers and planners from across the country to learn about the most recent updates to the Federal Highway Administration's (FHWA's) CMF Clearinghouse, how two states are using CMFs to estimate the benefits of safety improvements, and how your state can develop a state CMF list.

  • Daniel Carter, manager of the CMF Clearinghouse, began with a demonstration of the newest feature of the Clearinghouse website – a tool that allows you to compare two or more CMFs side by side.
  • Darren McDaniel (Texas Department of Transportation) described how Texas calculated the number of lives saved for road safety improvements and how Texas used CMFs in this process.
  • Tracy Turpin (Virginia Department of Transportation) presented a tool that Virginia uses to conduct benefit-cost analyses for systemic safety improvement projects.
  • Karen Scurry, FHWA, discussed how states can develop a state CMF List that can be used consistently for all analyses in a state.
 

Real World Safety: The Benefits of Using CMFs to Predict and Prioritize |
Dec. 8, 2015

View a recording of the webinar to the left. To download a copy of the webinar slides and answers to questions asked during the webinar, select the links below.

Presentation Slides: Upcoming Features (.pptx 266kb)

Presentation Slides: Using CMFs in Benefit/Cost Analysis and Project Prioritization (.pptx 1.9Mb)

Presentation Slides: Using CMFs in Planning for Virginia's Project Funding Prioritization (.pptx 5.9Mb)

Presentation questions and answers (.pdf 405kb)

 

Join transportation engineers, designers and planners from across the country to learn how to use the most recent updates to the Federal Highway Administration's CMF Clearinghouse, how to use CMFs in crash prediction models, and how two states are using CMFs in their project planning!

  • Daniel Carter, manager of the CMF Clearinghouse, will begin with current and upcoming features of the Clearinghouse, demonstrate a search using filters, and discuss how star quality ratings are given.
  • Frank Gross, highway safety engineer at Vanasse Hangen Brustlin, Inc., will discuss how CMFs are used in crash prediction models, with special focus on the Highway Safety Manual.
  • Stephen Read, safety engineer with Virginia DOT, will present on CMF development and application issues, specifically how Virginia DOT develops and uses planning level CMFs.
  • Michael McNeill, safety engineer with Ohio DOT, will discuss how Ohio DOT uses CMFs in project prioritization.

Do you have questions about applying CMFs? Be sure to stay for the end of the session for a brief Q&A session!

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. This event will also be submitted for American Institute of Certified Planners (AICP) credits.

 

Applying (or misapplying!) CMFs: The ins and outs of estimating crash reductions
Dec. 11, 2014

View a recording of the webinar to the left. To download a copy of the webinar slides and answers to questions asked during the webinar, select the links below.

Presentation Slides: Applying (or Misapplying!) CMFs: The ins and outs of estimating crash reductions overview (.pdf 320kb)

Presentation Slides: Practical limitations of CMFs (.pdf 790kb)

Presentation Slides: Sustainable safety at WSDOT (.pdf 1530kb)

Presentation Slides: WSDOT CMF short list (.pdf 1227kb)

Presentation questions and answers (.pdf 311kb)

 

Daniel Carter, researcher at the UNC Highway Safety Research Center and manager of the CMF Clearinghouse, began with a brief overview of new Clearinghouse features, focusing on how to select the CMF most appropriate to a specific scenario.

Frank Gross, highway safety engineer at Vanasse Hangen Brustlin, Inc., shared common errors in applying CMFs and discussed how misapplication of CMFs can lead to overestimating or underestimating the potential benefits of a countermeasure.

Finally, John Milton and Jennene Ring from Washington State DOT shared how they developed a CMF "short list" for their state and presented an example of how they use CMFs to evaluate and prioritize projects.

 

Research meets practice: Identifying and applying CMFs | Dec. 16, 2013

View a recording of the webinar to the left. To download a copy of the webinar slides and answers to questions asked during the webinar, select the links below.

Presentation Slides: Identifying and applying CMFs overview (.pdf 180kb)

Presentation Slides: Estimating combined effect of multiple treatments (.pdf 671kb)

Presentation Slides: Using CMFs in roadside analysis (.pdf 1.04mb)

Presentation questions and answers (.pdf 296kb)

 

Daniel Carter, senior engineering research associate at the UNC Highway Safety Research Center and manager of the CMF Clearinghouse, begins with a tutorial on the recently updated search and filtering features of the Clearinghouse website. Following Daniel, several presenters will address the application of CMFs in various scenarios.

Often, it is possible to use more than one countermeasure at a given location. But then can you multiply the CMFs to estimate their combined effect? Not always! Dr. Frank Gross, P.E., Highway Safety Engineer with VHB, Inc., explains and demonstrates the engineering judgment that must be exercised when estimating combined effect of multiple countermeasures at a given location. In addition, Ashley Reinkemeyer, P.E., of the Missouri Department of Transportation, and Jeremy Fletcher, P.E., P.S.M., of the Florida Department of Transportation, show how they are applying CMFs to document design decisions and prioritize projects within their agencies.

 

Steering through the data: Understanding and using the CMF Clearinghouse
Dec 13, 2012

View a recording of the webinar to the left. To download a copy of the webinar slides and answers to questions asked during the webinar, select the links below.

Presentation Slides: Steering through the data overview (.pptx 480kb)

Presentation Slides: NCDOT example of CMF Clearinghouse use (.pptx 953kb)

Participant submitted questions and answers (.pdf 309kb)

As Crash Modification Factors (CMFs) become an increasingly important tool for engineers, designers and planners to estimate and compare the safety- and cost-effectiveness of countermeasures, the CMF Clearinghouse has become a vital resource.

Karen Scurry, transportation specialist at FHWA’s Office of Safety Programs, and Daniel Carter, senior engineering research associate at the UNC Highway Safety Research Center and manager of the CMF Clearinghouse, demonstrate how the CMF Clearinghouse helps highway safety professionals identify the most appropriate countermeasure and CMF for their safety needs. In addition, Shawn Troy, safety engineer at NCDOT, shares how North Carolina uses the Clearinghouse and how he selects CMFs to use throughout his state.