United States Department of Transportation
i
Investigating the Effects of Smartphone-Based P2V Warning Using Driving Simulator Experiments
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2021-04-01
[PDF-1.11 MB]
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Edition:Final Report, May 2019 – April 2021
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Abstract:The pedestrian-to-vehicle (P2V) technology is expected to reduce pedestrian crashes and improve roadway safety. Utilizing the smartphone as a communication platform could make the P2V more applicable for old cars without having additional retrofits. In UCF’s previous work, the effectiveness of a general P2V design has been demonstrated. However, the influence of different P2V designs remains uncertain. This research focuses on the influence of P2V designs in different scenario conditions and uncovers some insights about potential variations between drivers, for the sake of better informing drivers about potential pedestrian risk situations in the upcoming automation era. Two aspects of P2V design, i.e., the warning display mode and warning content, were tested in six pedestrian pre-crash scenarios. The warning display mode is categorized into a gradually changed warning and an emergency warning; and the warning content is referred to whether having specific distance information as a supplement or not. Thirty- six valid participants were tested in the simulator. The results demonstrate that the gradually changed warning and considering additional information would be better in terms of safety and driving performance. In addition, the effectiveness of the P2V design can be further improved when considering the scenario and drivers’ features.
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