46 1-5 Event Data Recorder (EDR) System Data Element Meaning Purpose Vehicle velocity Wheel linear velocity or vehicle velocity obtained from other sources To analyze the vehicle veloci- ty at the time when the crash event occurred Vehicle identification number (VIN) VIN specified by the vehicle manufacturer To determine whether the EDR data is of the vehicle involved in the crash Seat belt status, driver Buckle switch status of the driver’s seat belt To analyze whether the driver had buckled up at the time when the crash event occur- red Engine throttle, percent full Percentage of the actual position of the accelerator pedal compared to the fully- depressed position To analyze the accelera- tor pedal (engine throttle) position at the time when the crash event occurred Ignition cycle, crash Number of power cycles applied to the ECU that records EDR data at the time when the crash event occur- red since the first use of that ECU.
An example of a ignition cycle is the ignition switch is turned from off/assistance mode to on/operation mode. Number of power cycles applied to the ECU that records EDR data at the time when the crash event occur- red since the first use of that ECU Ignition cycle, download Number of power cycles applied to the ECU that records EDR data at the time when the data was download- ed since the first use of that ECU. An example of a ignition cycle is the ignition switch turned from off/assis- tance mode to on/operation mode.
Number of power cycles applied to the ECU that records EDR data at the time when the data was download- ed since the first use of that ECU Completeness of event data recording Status identification indicat- ing whether event data is completely recorded and To verify the completeness of EDR data recorded