2.04 Work Zone Crash Analysis
An existing base line crash analysis is performed as part of the design process. In addition, a similar work zone set-up from a previous project should be reviewed to determine if a crash pattern existed and if mitigation measures can be utilized. If a similar location cannot be found, looking at the same work type on a different roadway type may provide valuable information. If you are not aware of a project for comparison, contact the WZMU.
Most work zone crashes are congestion related. Typical work zone crashes due to this condition are rear end crashes and are a result of traffic queues. Other contributions to work zone crashes are due to lane width restrictions and lane shifts in close proximity to fixed objects. The TTCP should include the proper traffic control devices to warn motorists of changes in road conditions.
