Accuracy of Selected 2008 Chrysler Airbag Control Module Event Data Recorders

This paper reports test results for accuracy of pre-crash speed, brake, and accelerator pedal data recorded in selected 2008 model year Chrysler ACM EDR’s under steady state speed conditions. The authors drove two test vehicles at two different speeds, 56 and 113 km/h (35 and 70 mph), and artificially created EDR events so pre-crash events would be stored. The authors collected ACM EDR data after each run. A differential Global Positioning System (GPS) based Racelogic VBOX III (100Hz) was used to measure vehicle speed and record brake on/off and accelerator pedal voltage real time. Maximum error, average error, and 98% confidence intervals are reported for EDR to VBOX. Accelerator pedal position accuracy and brake on/off reporting latency versus auxiliary sensor taps are documented.