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Old 11-21-2012, 01:22 PM   #47
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Join Date: Aug 2006
Location: VA
Posts: 13,119
My Ride: E60M
Originally Posted by jdstrickland View Post
Airbags need a sudden decelleration to deploy. A car can be hit with enough force to kill the car but not deploy the bags. Basically, it takes 20mph or higher to make the airbags deploy. If the car that did the damage was only doing 15 at the time of impact, then this is below the threshold for deployment. Perhaps my numbers are a bit out of whack, but the idea is still true -- it takes a certain impact to deploy the airbags, and if the impact is below the threshold then the bags will remain intact.
you were right in your first two sentences, then completely contradicted yourself.

Airbag sensors are generally around a decellerometer/inertial design. They measure how quickly the car changes acceleration in the specified direction.
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