Free Online HSM Overview Self-Paced Training Now Available Through NHI
Implementation of the HSM requires an understanding of the 'Science of Safety' which supports the quantitative methodologies presented in the manual. This course is an overview of the HSM structure, concepts and principles. The free selection format of the course allows the student to select modules and concepts of interest in the order preferable to their learning style, time availability, and previous knowledge level. It includes an introduction of terminology, examples of the Roadway Safety Management Process (Part B) and Predictive Methods (Part C), explains the relationship of Crash Modification Factors (CMFs) to decision making and quantitative safety analysis, and human factors.

Application of Crash Modification Factors (CMF)
The Application of Crash Modification Factors (CMF) includes a Web-based training that includes the background of CMFs, including terminology, the components of a CRF, and how to identify and interpret appropriate CMFs. The training also includes an Instructor-led training session that provides a hands-on experience with safety diagnosis and the application of CMFs to compare the effectiveness of countermeasures.

Science of Crash Modification Factors
The Science of Crash Modification Factors course provides participants with the knowledge and skills needed to critically assess the quality of CMFs. The course covers the concepts underlying the measurement of safety and the development of CMFs/AMFs, the key statistical issues that affect the development of quality CMFs, the key methodological issues that affect the development of quality CMFs, and the general and methodological issues and statistical thresholds used to recognize quality CMFs.


New Approaches to Highway Safety Analysis
The primary purpose of this course is to help attendees gain an understanding of the Highway Safety Improvement Program (HSIP) process, safety engineering principles and human factors issues related to traffic and road safety. It also provides the participant with an explanation of the latest methods for identifying collision causes and selecting cost-effective safety improvements. Finally, this course will serve as a prerequisite for those who will be utilizing SafetyAnalyst, a set of software tools currently under development that are designed to assist State and local agencies to improve the decisionmaking process in implementing safety improvement projects.


The information contained in the Crash Modification Factors (CMF) Clearinghouse is disseminated under the sponsorship of the U.S. Department of Transportation in the interest of information exchange. The U.S. Government assumes no liability for the use of the information contained in the CMF Clearinghouse. The information contained in the CMF Clearinghouse does not constitute a standard, specification, or regulation, nor is it a substitute for sound engineering judgment.