1.   A defect in the braking system caused several accidents before the car was recalled.

2.   A group of youths went joyriding in stolen cars, causing three accidents before the police caught them.

3.   Add rugs to hard floors for softness and interest, but make sure they will not slip and cause accidents.

4.   But now spoil-sport officials in the Roads Service have ordered him to remove them, claiming they could cause an accident.

5.   However, its only motion is to rotate, so it can hardly have caused the accident.

6.   Many accidents are caused by sports or by other activities whose risk are well known.