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Commercial Vehicle Event Data Recorders and the Effect of ABS Brakes During Maximum Brake Application
Technical Paper
2006-01-1129
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Many commercial vehicles have an event data recorder (EDR) that can record pre-event and post-event information. In this study, information from brake applications were studied to determine how the EDR data can be used to evaluate brake initiation time and vehicle deceleration rate. The study shows the effect of the ABS brake system on the electronic control module (ECM)-reported speed. The ECM-reported speed was compared to the speed measured by a calibrated optical 5th wheel and a GPS speed measuring system. The results show that the trend of the ECM-reported speed can be used as a predictor of the time when brake application first began. The results also show that under certain conditions the ECM-reported speed can be used to evaluate the deceleration rate of the vehicle. The results also show the ECM-reported speed is underreported during hard brake application due to the ABS brake function.
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Citation
Reust, T. and Morgan, J., "Commercial Vehicle Event Data Recorders and the Effect of ABS Brakes During Maximum Brake Application," SAE Technical Paper 2006-01-1129, 2006, https://doi.org/10.4271/2006-01-1129.Also In
References
- Reust, Timothy J. “The Accuracy of Speed Captured by Commercial Vehicle Event Data Recorders” SAE 2004-01-1199 2004
- van Nooten, Sebastian Hrycay, James R. “The Application and Reliability of Commercial Event Data Recorders for Accident Investigation and Analysis” SAE 2005-01-1177 2005
- Vadnais, Thomas H. Grimes, Wesley D. “Heavy Truck Brake Designer Validation Testing” 2005