Development and Application of Work Zone Crash Modification Factors (2nd Ed.)

This report introduces practitioners to the procedure for evaluating work zone countermeasures using existing Crash Modification Factors (CMFs) and the procedures for developing new work zone CMFs. Once derived, CMFs can be used for selecting countermeasures and scheduling lane closures. This 2nd Edition includes the addition of information regarding work zone CMF values, existing literature on work zone safety studies, existing agency practices for work zone safety, and more example applications.