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arXiv · 2407.09084

Perceived Time To Collision as Public Space Users' Discomfort Metric

Alireza Jafari·Yen-Chen Liu
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Abstract

Micro-mobility transport vehicles such as e-scooters are joining current sidewalk users and affect the safety and comfort of pedestrians as primary sidewalk users. The lack of agreed-upon metrics to quantify people's discomfort hinders shared public space safety research. We introduce perceived Time To Collision (TTC) as a potential metric of user discomfort performing controlled experiments using an e-scooter and a pedestrian moving in a hallway. The results strongly correlate the participant's reported discomfort and the perceived TTC. Therefore, TTC is a potential metric for public space users' discomfort. Since the metric only uses relative velocity and position information, it is a viable candidate for neighboring people's discomfort estimation in advanced driver assistance systems for e-scooters and PMVs. Our ongoing research extends the results to mobile robots.

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Alireza Jafari, Yen-Chen Liu. 2024-07-12. Perceived Time To Collision as Public Space Users' Discomfort Metric. https://arxiv.org/abs/2407.09084

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