Citation

Davies B. Collision 2010; 5(2): 98-101.

Copyright

(Copyright © 2010, Collision Publishing)

DOI

unavailable

PMID

unavailable

Abstract

Although information obtained from the event data recorder (EDRs) that is built into an airbag control module (ACM) might be useful in accident reconstruction, this information is only part of the reconstruction process. This article addresses the interface between the ACM and vehicle restraint systems in accident reconstruction. The passenger presence system can give information on what the ACM understood to be the situation at the time of the collision. Information from the passenger presence system along with vehicle examination can be used to determine whether or not there was a passenger and, if so, whether they were using a seat belt. Accident reconstructionists need to verify that the ACM from the wrecked vehicle is the original ACM or is the proper replacement part for that vehicle. They must also understand that there may be occasions when the event data recording is not complete due to power interruption or failure. This may create a false report on the status of seat belt use at the time of the accident. When physical evidence conflicts with information from the EDR, the physical evidence should prevail.