On-road projection symbols for future vehicles: A survey study for Chinese roads

On-road projection symbols for future vehicles: A survey study for Chinese roads

Xiaodong Sun¹,Ali Hassan Shah²,Jinlong Ao^2,4, Wenqing Miao², Yandan Lin^1,2*, Wenfang Chen³

¹Academy for Engineering & Technology, Fudan University; Shanghai, China, 200433

²Department of Light Sources and Illuminating Engineering, School of Information Science and Technology; Fudan University; Shanghai, China, 200433

³Chery Automobile Co.,Ltd, Anhui, China, 241006

⁴Hasco Vision Technology Co., Ltd, Shanghai, China, 201821

*Contact email address: ydlin@fudan.edu.cn, 170789511@qq.com

Abstract—The automotive industry has provided multiple external human-machine interfaces (eHMI) for autonomous vehicles (AV), because now that cars need to be driven more safely, the so-called eHMI can be used to compensate for the lack of human communication in the car. Industry and academia have come up with a variety of designs for hem, but there seems to be no consensus on which type of eHMI should be used. Here, we examine topics such as images, videos, texts, etc. to explore the acceptance of eHMI by road users. This study focuses on the concept of eHMI: on-road image projections of DMD-based light systems from the automotive industry. Based on the literature findings we tried to design a comprehensive, transferable, simple projection symbol that meets all the current standards of vehicle manufacturers. These eHMI projection symbols were presented to the Chinese drivers for their views based on their likeness for these symbols. In the survey, respondents were lied to about the clarity of 12 images, videos and drawings provided by the auto industry. Based on the survey results, Chinese people like simple projections without complicated patterns inside. These efforts are very valuable for industry and scientific research.

Keywords-eHMI; On-road image projections; DLP/DMD; feelings of safety; autonomous vehicles