Air bag non-inflation conditions

 In certain low-speed collisions the air bags may not deploy. The air bags are


In certain low-speed collisions the air bags may not deploy. The air bags are designed not to deploy in such cases because they may not provide benefits beyond the protection of the seat belts in such collisions.

 Air bags are not designed to inflate in rear collisions, because occupants


Air bags are not designed to inflate in rear collisions, because occupants are moved backward by the force of the impact. In this case, inflated air bags would not be able to provide any additional benefit.

 Front air bags may not inflate in side impact collisions, because occupants


Front air bags may not inflate in side impact collisions, because occupants move to the direction of the collision, and thus in side impacts, frontal air bag deployment would not provide additional occupant protection. However, side impact and curtain air bags may inflate depending on the intensity, vehicle speed and angles of impact.

 In an angled collision, the force of impact may direct the occupants in a direction


In an angled collision, the force of impact may direct the occupants in a direction where the air bags would not be able to provide any additional benefit, and thus the sensors may not deploy any air bags.

 Just before impact, drivers often brake heavily. Such heavy braking lowers


Just before impact, drivers often brake heavily. Such heavy braking lowers the front portion of the vehicle causing it to ride under a vehicle with a higher ground clearance. Air bags may not inflate in this "under-ride" situation because deceleration forces that are detected by sensors may be significantly reduced by such under-ride collisions.

 Front air bags may not inflate in rollover accidents because air bag deployment


Front air bags may not inflate in rollover accidents because air bag deployment would not provide protection to the occupants. Side impact and curtain air bags may inflate when the vehicle is rolled over by a side impact collision.

 Air bags may not inflate if the vehicle collides with objects such as utility


Air bags may not inflate if the vehicle collides with objects such as utility poles or trees, where the point of impact is concentrated to one area and the full force of the impact is not delivered to the sensors.

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