Secure run-off zone at a racing circuit, which quickly slows down cars that have gone off the track.

A lane of gravel on the outside of corners which is designed to stop cars when they misjudge a corner or spin off. Sometimes drivers are able to rejoin the race after spinning into the gravel trap.

a bed of gravel placed on the outside of corners that is designed to slow cars that have slid off the track, bringing them to a halt