Supplementary data for the paper 'Automated vehicles that communicate implicitly: examining the use of lateral position within the lane'

It may be necessary to introduce new modes of communication between automated vehicles (AVs) and pedestrians. This research proposes using the AV’s lateral deviation within the lane to communicate if the AV will yield to the pedestrian. In an online experiment, animated video clips depicting an approaching AV were shown to participants. Each of 1104 participants viewed 28 videos twice in random order. The videos differed in deviation magnitude, deviation onset, turn indicator usage, and deviation-yielding mapping. Participants had to press and hold a key as long as they felt safe to cross, and report the perceived intuitiveness of the AV’s behaviour after each trial. The results showed that the AV moving towards the pedestrian to indicate yielding and away to indicate continuing driving was more effective than the opposite combination. Furthermore, the turn indicator was regarded as intuitive for signalling that the AV will yield.<br>

或许有必要为自动驾驶车辆（AVs）与行人之间引入新的通信模式。本研究提出，可利用AV在车道内的横向偏移来传达其是否会向行人让行的意图。在一项在线实验中，研究人员向参与者展示了描绘AV逼近场景的动画视频片段。1104名参与者每人以随机顺序观看28段视频两次。这些视频在偏移幅度、偏移起始时间、转向灯使用情况以及偏移-让行映射关系上存在差异。参与者需在感到安全可横穿时按住按键，并在每次试验后报告对AV行为的直观感知程度。结果表明，AV向行人方向偏移以示意让行、向远离行人方向偏移以示意继续行驶的模式，比相反的映射组合更为有效。此外，转向灯被认为是传达AV让行意图的直观信号。