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Title: Investigation of Truck-Mounted Attenuator Crashes in Work Zones in Virginia
Contact: Benjamin H. Cottrell, Jr.
Project No.: 105843
Target Date: 10/20/2015
Abstract: Truck-mounted attenuators (TMAs) are deployed on shadow vehicles in highway work zones to reduce the impacts of other vehicles that may strike the shadow vehicle – either by smoothly decelerating the errant vehicle to a stop  when hit head on or by redirecting the errant vehicle.

This study will investigate crashes involving TMAs in work zones in Virginia.

Objectives include:
• Review three- to five-year trends for crashes involving TMAs, including a measure of traffic exposure, such as how often work zones use TMAs; and
• Identify causal factors of crashes in work zones where TMAs are involved.

By determining causal factors behind such crashes, this project can provide improved guidance to the Virginia Department of Transportation (VDOT).

Recommendations from this study are expected to result in changes to work-zone operations through revisions to the “Virginia Work Area Protection Manual” and/or other documents and practices used by VDOT’s Traffic Engineering Division.

     Benjamin H. Cottrell, Jr.
     Benjamin H. Cottrell, Jr.