Longitudinal bicyclist,driver,and pedestrian perceptions of autonomous vehicle communication strategies

作     者：Nicholas N.Ferenchak Nicholas N.Ferenchak

作者机构：Department of CivilConstruction&Environmental EngineeringUniversity of New MexicoAlbuquerqueNM 87131USA 

出 版 物：《Journal of Traffic and Transportation Engineering(English Edition)》 (交通运输工程学报（英文版）)

年 卷 期：2023年第10卷第1期

页      面：31-44页

核心收录：

学科分类：08[工学] 080204[工学-车辆工程] 0802[工学-机械工程] 0814[工学-土木工程] 0823[工学-交通运输工程] 

基　　金：support from the Transportation Consortium of South-Central States(Tran-SET)(grant number 20ITSUNM32) a University Transportation Center funded by the U.S.Department of Transportation。 

主　　题：Vehicle automation Communication Human-automation interaction Technology acceptance Virtual reality 

摘      要：We sought to better understand how autonomous vehicle(AV)communication strategies impact human road users’perceptions.More specifically,we explored the impact of different external human-machine interface(eHMI)designs on task load,comfort,trust,and acceptance.To accomplish this,we created virtual reality(VR)scenarios where human participants interacted with AVs in biking,driving,and pedestrian simulators.Participants were brought back after initial testing to explore acclimation and learning effects.eHMI designs included a text-based grille eHMI,a text-based roof eHMI,a text-based driver-side door eHMI,anon-textual LED windshield strip eHMI,and a non-textual side mirror arrow eHMI.The presence of an eHMI was the strongest positive predictor of comfort,trust,and acceptance outcomes in the statistical models when controlling for all other variables.There was a clear divide between text-based eHMIs and non-text eHMIs with text-based eHMIs experiencing better perception scores.The LED Windshield experienced the worst perception scores.There were perception acclimation effects detected which were most notable for task load(which decreased over time)and comfort(which increased over time).Perception scores for the different eHMI designs tended to cluster over time.However,the acclimation effects had less of an impact than the presence of an eHMI.Perception outcomes had weaker relationships with participant characteristics than with AV characteristics.Results suggest that eHMI presence and design,AV behavior,and acclimation are most impactful in terms of perceptions.