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Citation
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Anctil B, Charlebois D, Dube S, Burns P, Saleh A, Pierre G, Chirila V, Nahimana F. 27th International Technical Conference on the Enhanced Safety of Vehicles (ESV); April 3-6, 2023; Abstract #: 23-0103-O, pp. 15p. Washington, DC USA: US National Highway Traffic Safety Administration, 2023 open access. |
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Abstract
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27th International Technical Conference on the Enhanced Safety of Vehicles (ESV)
https://www-esv.nhtsa.dot.gov/Proceedings/27/27ESV-000103.pdf
It is estimated that Automatic Emergency Braking (AEB) systems could potentially help mitigate 80% of rear end and pedestrian/cyclist crashes assuming they can stop the vehicle under all circumstances. In practice, however, technical limitations of systems (sensors, control unit, and actuators), vehicle dynamics, and environmental conditions (e.g., lighting, road conditions) reduce the overall crash avoidance performance of AEB systems. In an effort to better understand these limitations, Transport Canada initiated a study aiming at establishing the general AEB performance of the Canadian vehicle fleet. Three collision scenarios from recognized test protocols were considered: 1) stopped lead vehicle, 2) slower moving lead vehicle, and 3) crossing pedestrian. A total of 43 light duty vehicles (passenger cars, SUVs, and pickup trucks) from 26 different manufacturers were tested for carto-car scenarios, and 30 vehicles were tested for car-to-pedestrian scenarios. Vehicles' model years ranged from 2013 to 2022. The large sample size of this study covers a significant proportion of the most popular vehicles sold in Canada. To ensure test repeatability, vehicles were equipped with precision positioning systems, audio alert detectors and driving robots. The optimal AEB operating speed range needed to address most real-world collisions was determined from recent crash data. Overall, the performance of vehicles tested was found to improve over the years when compared to the thresholds defined in the U.S. DOT/NHTSA Commitments, but a large proportion struggled to meet the requirements defined in UN regulation No. 152. Interestingly, the results obtained with the best performing systems suggest that it is now possible to achieve even better speed reduction outcomes than the criteria defined in the selected references The results of this study demonstrate that, with the continuous improvements of AEB systems, it is now possible to exceed performance levels defined in existing requirements. Technological advancements and added capabilities, including pedestrian detection, continue to increase the crash avoidance potential of these systems and, thus, enhance road safety. The methods and criteria evaluated in this study can help to inform future international policy and regulatory requirements.
Language: en |