FHWA Countermeasures for Intersection Crashes
Credits: 1 PDH
PDH Course Description:
In this online engineering PDH course, estimates are discussed of the crash reduction expected if various countermeasures are implemented with respect to intersection crashes. The estimates are presented as Crash Reduction Factors (CRFs).
Traffic engineers and other transportation professionals can use the information contained in this course when asking the following types of question:
Which countermeasures might be considered at the signalized intersection of Maple and Elm streets, an intersection experiencing a high number of total crashes and left-turn crashes? What change in the number of total crashes and left-turn crashes can
be expected with the implementation of the various countermeasures? To answer questions like these, in this course CRFs are presented in separate tables for signalization, geometric, and signs/markings/operational countermeasures.
Topics:
This course teaches the following specific knowledge and skills:- Define “crash reduction factors”;
- Identify CRFs for signalization, geometric, and signs/markings/operational countermeasures;
- Explain how crash severity is taken into account in choosing an appropriate countermeasure; and
- Explain how existing control information, such as no signal, signal, stop, or stop/yield is taken into account in choosing an appropriate countermeasure.
To take this course:
1.) Enroll in Course: Click below to enroll:
(must be logged into your user account)
Download the Study Guide
3.) Test: Once you've thoroughly read the course materials, please click below to take the final examination.
Take the final exam
4.) Certificate: A passing grade of 70% or higher on the exam, is required to receive the certificate of completion for this PDH course.
NOTE: After the exam is completed, you will need to return to this page, in order to print (download) the certificate of completion.
Print the Certificate of Completion
Intended Audience: This course is intended for engineers and other transportation professionals concerned with the design of intersections.
Publication Source: "Toolbox of Countermeasures and Their Potential Effectiveness for Intersection Crashes FHWA-SA-10-005 – November 2009, which can be accessed at https://safety.fhwa.dot.gov/intersection/other_topics/fhwasa10005/docs/brief_8.pdf.
Print the Certificate of Completion
Intended Audience: This course is intended for engineers and other transportation professionals concerned with the design of intersections.
Publication Source: "Toolbox of Countermeasures and Their Potential Effectiveness for Intersection Crashes FHWA-SA-10-005 – November 2009, which can be accessed at https://safety.fhwa.dot.gov/intersection/other_topics/fhwasa10005/docs/brief_8.pdf.
Mark Rossow PhD, PE (retired)