4.2.2. Detecting crashes
European version vehicles are equipped with the following sensors:
- One transverse and longitudinal acceleration sensor in the central sensor (yellow)
- One transverse and longitudinal acceleration sensor in each of the B-pillars (green)
- One airbag sensor for pressure in each of the front doors (blue).
- One longitudinal acceleration sensor on each of the engine supports (red)
The longitudinal acceleration sensors can measure both positive and negative acceleration. Using these signals, a front-end or rear-end crash is detected.
A side-on crash is detected using the lateral acceleration sensors and airbag sensors in the doors.
A crash in which the force-transfer direction is not perpendicular to the vehicle's longitudinal or transverse axis is detected by means of a combined transverse and longitudinal acceleration.
The longitudinal acceleration sensors on the engine supports serve to detect a front-end crash and its severity.