From Passersby to Placemaking: Designing Autonomous Vehicle–Pedestrian Encounters for an Urban Shared Space
From Passersby to Placemaking: Designing Autonomous Vehicle-Pedestrian Encounters for an Urban Shared Space
HCI Today summarized the key points
- •This study examines encounters between autonomous vehicles and pedestrians in shared spaces from the perspective of urban placemaking and place identity.
- •The research team expanded the existing intent-communication-focused external human–machine interface (eHMI) and designed three types of place-based eHMI that visually and spatially integrate with the environment.
- •In a VR simulation, 25 participants experienced the designs, and the results showed that the more attractive and stimulating the design, the safer and more at ease pedestrians felt.
- •In particular, step (integrated with the ground) and wave (shaped like waves) made the AV feel like part of the space, increasing social interaction and the sense of place.
- •On the other hand, glow—using strong illumination—can be misinterpreted as an urgent or yielding signal, underscoring the importance of designing eHMI that fits the context.
This summary was generated by an AI editor based on HCI expert perspectives.
Why Read This from an HCI Perspective
This article is highly meaningful for HCI/UX researchers because it extends AV–pedestrian interaction beyond a simple ‘intent communication’ problem to encompass urban experience and place-making. In particular, it shows how emotional experiences—such as perceived safety, comfort, and interest—change when eHMI is integrated into the physical environment and content. Practically, it suggests that when designing future mobility interfaces, designers should consider not only functional clarity but also the context of place.
CIT's Commentary
A particularly interesting point is that the AV is redefined not as a ‘vehicle moving along the road,’ but as a ‘potential participant in a shared space.’ The findings that designs with different levels of physical integration—such as glow, wave, and step—affect perceived safety and the formation of a sense of place differently indicate that visual spectacle in an interface does not automatically translate into anxiety. However, the fact that glow can instead evoke associations with emergency vehicles and reduce perceived safety highlights how strongly visual language in an urban context carries normative learning. Going forward, beyond evaluating impressions from a single moment, it will be important to examine how place-based eHMIs accumulate ‘familiarity’ and ‘trust’ through repeated exposure and within real pedestrian flow.
Questions to Consider While Reading
- Q.Can we validate how the effects of place-based eHMI vary by time of day, crowding levels, and weather conditions?
- Q.How should we address the issue that even if a design with strong visual integration increases pedestrians’ sense of safety, it may weaken their ability to distinguish the AV from other vehicles or pedestrians?
- Q.At the actual deployment stage, considering requirements for publicness, maintenance, and standardization, which design principles should be prioritized first?
This commentary was generated by an AI editor based on HCI expert perspectives.
Please refer to the original for accurate details.
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