From Longman Dictionary of Contemporary Englishcrash barrierˈcrash ˌbarrier noun [countable] British English TTRa strong fence or wall built to keep cars apart or to keep them away from people, in order to prevent an accident
Examples from the Corpus
crash barrier• William Farrell had seen a Renault 25 car parked beside a crash barrier as he drove past.• It ploughed off the motorway, behind the motorway bridge crash barrier, and into the concrete upright.• And the family blames a faulty motorway crash barrier.• They blame his death on a faulty motorway crash barrier.• It came down against the crash barrier.• Now the council is waiting for the car parks firm to solve the crash barrier problem. 