Browse Publications Technical Papers 2012-01-0998

Confirmation of Toyota EDR Pre-crash Data 2012-01-0998

Modern event data recorders (EDRs) can provide useful information regarding vehicle incidents. EDR information, when used in conjunction with the available physical information, can greatly assist accident analysis and field performance evaluation. This additional source promotes more accurate understanding of crashes, which in turn advances vehicle safety research, and investigations.
This paper analyzes the performance of Toyota's EDR, focusing on pre-crash data (vehicle speed, engine speed, brake switch status, and accelerator pedal position sensor #1 voltage) and certain other parameters (front seat belt buckle switch status, driver seat track position, right front occupant status, and gear shift position). The EDR pre-crash data was compared to the data on the High Speed Controller Area Network (HS-CAN) data during eleven test conditions. Multiple static and dynamic driving situations ranging from 0 to 96 km/h were investigated in three different Toyota vehicle models and are reported herein. Impact events were simulated by directly impacting the airbag control module to initiate the recording of an event. Version 4.1 of the Bosch Crash Data Retrieval (CDR) System software and hardware was utilized to image the EDR and report the EDR recordings.
The eleven test conditions, for the three models that were evaluated, indicated that the Toyota EDR was recording the data accurately.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 17% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:

Evaluation of Camry HS-CAN Pre-Crash Data


View Details


Accuracy of Event Data in the 2010 and 2011 Toyota Camry During Steady State and Braking Conditions


View Details


Study on Characteristics of Event Data Recorders in Japan; Analysis of J-NCAP and Thirteen Crash Tests


View Details