A rear-end collision, often called rear-ending or, in the UK, a shunt, occurs when a forward-moving vehicle crashes into the back of another vehicle in front of it. Similarly, rear-end rail collisions
A rear-end collision in Yate, near Bristol, England, in July 2004. The car failed to stop when the semi truck stopped at a roundabout. The car's bonnet can be seen deep under the rear of the lorry.