crash truck
n.— «Woolley said the thick back of the maintenance vehicle—often called a “crash truck”—is designed to take the brunt of the impact in case of an accident. A “crash truck” is used by maintenance workers repairing the road. It is meant to protect the crew from vehicles passing by at a high speed.» —“Highways clogged after two serious car crashes” CTV.ca (Canada) Mar. 24, 2008. (source: Double-Tongued Dictionary)
Further reading
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