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This paper analyzes the HS-CAN pre-crash data, namely vehicle speed, engine speed, accelerator pedal position and brake application in a 2010 Toyota Camry. The Camry EDR monitors messages on the HS-CAN for the pre-crash conditions to be recorded. Evaluation of the HS-CAN data provides understanding of the data and limitations of the EDR. Comparison was made between the HS-CAN pre-crash data and independent instrumentation data. The refresh rate, resolution and difference to independent instrumentation of each of the pre-crash parameters were determined. A comparison of EDR data was also made.

Prior to developing or modifying the protocol of a performance evaluation test, it is important to identify field relevant conditions. The objective of this study was to assess the distribution of selected crash variables from rear crash field collisions involving modern vehicles. The number of exposed and serious-to-fatally injured non-ejected occupants was determined in 2008+ model year (MY) vehicles using the NASS-CDS and CISS databases. Selected crash variables were assessed for rear crashes, including severity (delta V), impact location, struck vehicle type, and striking objects. In addition, 15 EDRs were collected from 2017 to 2019 CISS cases involving 2008+ MY light vehicles with a rear delta V ranging from 32 to 48 km/h. Ten rear crash tests were also investigated to identify pulse characteristics in rear crashes. The tests included five vehicle-to-vehicle crash tests and five FMVSS 301R barrier tests matching the struck vehicle.