The Acoustic Signature of Electric Vehicles During Acceleration Impairs Pedestrians' TTC Estimates (vor Ort)

* Presenting author
Day / Time: 23.03.2022, 09:20-09:40
Room: 7-01.
Typ: Vortrag (strukturierte Sitzung)
Online-access: Bitte loggen Sie sich ein, damit weitere Inhalte sichtbar werden (bspw. der Zugang zur Onlinesitzung).

Earlier studies found no substantial benefit of additional auditory information in time-to-collision (TTC) estimates for objects approaching at a constant speed, compared to a visual-only condition. However, we previously found that additional auditory information improved TTC estimations for accelerating internal combustion engine vehicles (ICEVs). Here, we investigated whether the advantage of auditory information also applies to accelerating electric vehicles (EVs) with and without an acoustic-vehicle-alerting-system (AVAS). An audiovisual virtual reality setting was used to present ICEVs and EVs with and without AVAS in an urban traffic scenario. Participants estimated the TTC of vehicles either approaching at constant speed for 5.0 s or traveling at constant speed for 2 s before accelerating for 3 s. At constant speeds, TTC estimates for both EVs were similar to those for ICEVs. With acceleration initiated at a lower speed, TTC of both accelerating EVs was substantially overestimated compared to the ICEV – although the AVAS slightly reduced the overestimation. The results indicate that the acoustic signature of accelerating EVs lacks salient information to assess TTC as accurately as for ICEVs, which the AVAS can only partly compensate for. This suggests a potentially higher collision risk when pedestrians interact with EVs without and with AVAS.



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