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>

自动驾驶汽车（Automated Vehicles, AVs）与行人之间或需构建新型交互沟通范式。本研究提出利用自动驾驶汽车在车道内的横向偏移量，向行人传递其是否会让行的信号。在一项线上实验中，研究人员向被试展示了描绘靠近中的自动驾驶汽车的动画视频片段。1104名被试均以随机顺序观看28段视频各两次。这些视频在偏移幅度、偏移起始时机、转向灯使用情况以及偏移-让行映射关系这几个维度上存在差异。被试需要在认为可以安全横穿马路时持续按住按键，并在每一轮试次结束后报告其对该自动驾驶汽车行为的直观感知度。实验结果表明，自动驾驶汽车驶向行人以示意让行、驶离行人以示意继续行驶的信号模式，相较于相反的组合模式更为有效。此外，转向灯被认为是传递自动驾驶汽车让行意图的直观信号方式。