Crash Data Retrieval System
American Bio Engineers has the ability to retrieve data from a vehicle’s Event Data Recorder (EDR), or “black box”, which may record data during a collision. We utilize the Bosch Crash Data Retrieval (CDR) System and the Kia/Hyundai EDR retrieval tools, which have the ability to retrieve data from a vehicle’s airbag control module (ACM)*. The airbag control module is the “brain” of the airbag deployment system and determines within milliseconds whether or not a collision is severe enough to deploy the airbags. In many modern vehicles, the ACM is also capable of recording data for both deployment and non-deployment collision events. While the type of information available through the download of the ACM varies between vehicles, some common information that can be retrieved includes the following:
- Ignition cycle count at the time of event
- Ignition cycle count at the time of retrieval
- Longitudinal change in velocity (ΔV) vs. time
- Lateral ΔV vs. time
- Vehicle roll rate
- Pre-crash speed up to 5 seconds prior to collision
- Pre-crash brake switch status up to 5 seconds prior to collision
- Pre-crash steering input up to 5 seconds prior to collision
- Pre-crash acceleration pedal/throttle position up to 5 seconds prior to collision
- Occupancy status for front passenger
- Seat belt status (buckled/unbuckled) for front seats
Nearly all major automobile manufacturers (General Motors, Ford, Chrysler, Toyota, Honda, Nissan, etc.) are currently able to be downloaded through the Bosch CDR System. For a complete list of supported vehicles, follow the provided link below and click on “Supported Vehicle List” under documents.
For Hyundai and Kia vehicles, all vehicles manufactured after September 1, 2012 are supported to be downloaded. In some cases, data can also be retrieved from 2010-2012 model year vehicles.
Data retrieved from a vehicle after an accident can be a vital tool in the reconstruction of high speed accidents and can help determine the severity of contact in minor collisions. For non-deployment events, the data can be overwritten by the recording of subsequent events, or in the case of several GM vehicles, it may be overwritten after approximately 250 ignition cycles, so it is essential to retrieve the data quickly after a collision.
*In some cases, data may be retrieved from other vehicle modules, such as the powertrain control module (PCM), roll-over sensor (ROS), and pedestrian protection module (PPM).