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Citation
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Lich T, Schlender T, Schmidt D, Schock T, Rupp M, Schori T. 27th International Technical Conference on the Enhanced Safety of Vehicles (ESV); April 3-6, 2023; Abstract #: 23-0169-O, pp. 13p. 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): Enhanced and Equitable Vehicle Safety for All: Toward the Next 50 Years
The list of driver assistance features is getting longer and longer. All this assistance raises the question: Will driving still be fun in future? Adaptive cruise control (ACC) as SAE Level 1 system adds safety and comfort to the driver. Per definition, ACC takes over driving tasks and offers limited self-determination in terms of driving experience and enjoyment. On the other hand, Automatic Emergency Braking (AEB) systems are designed to prevent a potential collision at latest. Yet, an AEB system has operational constraints depending on its system capabilities and the type and complexity of the sensors used. To expand SAE Level 0 safety systems like AEB, Bosch develops the feature Adaptive Distance Control (ADC). It transfers an early and comfortable distance control to self-driving situations. And it adapts to personal driving style to enable a natural driving experience with a comfortable and noticeable safety benefit. Thus, ADC links between ACC and AEB to relax traffic flow and to prevent incidents at an early stage. The present study evaluates the effectivity of ADC in terms of the above-mentioned safety benefits. It is comprised of a thorough analysis of road traffic observation data (drone data) and the analysis of rear-end collisions involving M1-vehicles on German roads. In the first part of the study, real-world traffic observation data (highD dataset) from six motorways in North RhineWestphalia in Germany was used to determine the time headway (THW) among cars. THW equals the ACC time gap between two vehicles. In the second part, data from the German in-depth accident study (GIDAS) was used to identify the number of relevant crashes which can potentially being positively influenced, i.e., the field of effect (FoE) for ADC. The analysis of 89,139 passenger car observations reveals that ADC could support 1 out of 12 drivers to keep a THW ≥ 0.6s if lane changes are neglected. Furthermore, the FoE for ADC was estimated up to 5.3% of all crashes with casualties in Germany, depending on its system capabilities. This corresponds to about 16,100 addressable collisions annually if each car would be equipped with the ADC feature. The present study reveals that ADC can prevent crashes. Moreover, the system maintains the balance between safety and comfortable driving experience and could support a relaxation of the traffic flow. All this in a standard E/E architecture without adaptations.
Language: en |