Citation

Rouchitsas A, Alm H. Front. Psychol. 2019; 10: e2757.

Affiliation

Humans and Technology Division, Luleå University of Technology, Luleå, Sweden.

Copyright

(Copyright © 2019, Frontiers Research Foundation)

DOI

10.3389/fpsyg.2019.02757

PMID

31920810

PMCID

PMC6916419

Abstract

Interaction between drivers and pedestrians is often facilitated by informal communicative cues, like hand gestures, facial expressions, and eye contact. In the near future, however, when semi- and fully autonomous vehicles are introduced into the traffic system, drivers will gradually assume the role of mere passengers, who are casually engaged in non-driving-related activities and, therefore, unavailable to participate in traffic interaction. In this novel traffic environment, advanced communication interfaces will need to be developed that inform pedestrians of the current state and future behavior of an autonomous vehicle, in order to maximize safety and efficiency for all road users. The aim of the present review is to provide a comprehensive account of empirical work in the field of external human-machine interfaces for autonomous vehicle-to-pedestrian communication. In the great majority of covered studies, participants clearly benefited from the presence of a communication interface when interacting with an autonomous vehicle. Nevertheless, standardized interface evaluation procedures and optimal interface specifications are still lacking.

Copyright © 2019 Rouchitsas and Alm.

Language: en

Keywords

autonomous vehicles; external human–machine interfaces; human–vehicle interaction; traffic interaction; vehicle-to-pedestrian communication; vulnerable road users