air bag restraint system
Automatic safety device containing air bags that, in the event of impact, instantly come between the occupants and the dashboard.
air bag 
Flexible envelope encased in the dashboard, the steering wheel or the doors, which inflates with pressurized gas when it receives the signal from the safing sensor.
safing sensor 
Device that receives the signal from the primary sensor and deploys the air bags. It has safeguards against deploying accidentally.
primary crash sensor 
Device located at the front of the vehicle, which, in the event of collision, transmits the pulse it receives to the safing sensor.
electrical cable 
Cable connecting the safing sensor, which causes the air bags to deploy.