a device, such as an airbag, that protects people in a car if there is a crash
passive restraint in American English
any automatic, built-in system for the protection of automotive vehicle passengers during a crash, as a system using air bags
passive restraint in Automotive Engineering
(pæsɪv rɪstreɪnt)
Word forms: (regular plural) passive restraints
noun
(Automotive engineering: Vehicle components, Bodywork, controls, and accessories)
A passive restraint is any device, such as an air bag, that operates automatically to prevent you beingthrown out of the seat of a vehicle if there is a crash.
Passive restraints such as air bags or automatic seat belts are required in all vehicles.
The passive restraint rule required auto makers to install either air bags or automatically fastening seatbelts.
Air bags are significantly more expensive than other passive restraint devices.