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Search for courses based on delivery type, program area, or topic below, or find upcoming trainings in your state or territory. For more information on trainings from the National Highway Institute, contact us.

Course Description

Developing Quality Crash Modification Factors

PROGRAM AREA: Highway Safety
Web-conference Training (WCT)Web-conference Training (WCT)
Calendar Year
Host Price
17 Hours
1.7 Units
$0 Per Participant


CLASS SIZE: Minimum: 10 Maximum: 30

NOTES:This is a 4-week long, blended training. It includes live, instructor-led sessions held in an interactive, virtual class, and self-paced lessons, assignments that you will work on independently. Live sessions are generally held on Tuesdays and Thursdays 1:00-3:00 pm EDT on October 27th, 29th, November 2nd (Monday), 5th, 10th, 12th, 17th, and 19th. It is mandatory that you attend all virtual instructor-led sessions. **Live sessions will not be recorded. NOTE: This is a popular course and seats fill up quickly. If you cannot attend all 8 live sessions, please wait for the next session of this course to allow others a chance to benefit from this training.


The science of safety has evolved over time, such that researchers have employed more rigorous study designs, resulting in more consistent and reliable results of countermeasure effectiveness. There are currently almost 1000 countermeasures, with over 7,200 different Crash Modification Factors (CMFs) in the CMF Clearinghouse. However, just over 300 of the CMFs are recognized as "high quality" based on the CMF Clearinghouse quality criteria.

The goal of this interactive virtual classroom is to enable you to develop and document quality CMFs. The course provides practical application of various CMF development methods and appropriate documentation of CMF study results. The course is divided into two parts. Part 1 will provide the fundamentals of CMF development, and Part 2 will cover the more advanced concepts and allow you to practice employing the various methods.

The course features self-paced Web-Based Training (WBT) modules and assignments to be completed independently, interspersed with eight instructor-led virtual classroom sessions, during which you will interact with peers and your instructor. If you cannot attend all 8 live sessions, please allow others a chance to benefit from this training.

To enroll in this virtual training , select the 'View Sessions' button and select 'Add To Cart' next to your session choice. If there are no upcoming sessions, select 'Sign Up for Session Alerts.'


Upon completion of the course, participants will be able to:

  • Identify the various study designs used to develop CMFs, their data needs, and associated strengths and limitations
  • Select an appropriate study design based on the resources and quantity/quality of data available
  • Apply the various methodologies to develop CMFs and assess the quality of the results
  • Report the salient information for any new CMFs developed so that others may properly assess the applicability and quality of the CMFs


The target audience for this virtual training includes those involved with the development of CMFs, including those responsible for providing, merging, and analyzing the data as well as those responsible for providing specific background information on the countermeasures of interest. This could include state or local transportation agencies, as well as their consultants or university support. Participants of this course should have prior experience with CMFs and have a basic understanding of statistical concepts.

If you have questions about this NHI training, please contact NHI at or 877.558.6873.


Start Date: 10/27/2020
End Date: 11/27/2020
Location: Online
Local Coordinator: Thomas Elliott (703) 235-0544
0 Public Seats
$0 Per Person
0 FHWA Seats
Host this Course

The National Highway Institute (NHI) has been accredited as an Accredited Provider by the International Association for Continuing Education and Training (IACET). In obtaining this accreditation, NHI has demonstrated that it complies with the ANSI/IACET Standard which is recognized internationally as a standard of good practice. As a result of their Accredited Provider status, NHI is authorized to offer IACET CEUs for its programs that qualify under the ANSI/IACET Standard.


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