Abstract
Abstract In the transportation sector, traffic participants communicate to ensure smooth traffic. Although research on automated driving has been remarkable in recent years, conventional communication methods, such as eye contact, cannot be used in automated vehicles because a person sitting in the driver’s seat does not control the vehicles. Therefore, this study focuses on communication methods using an external human-machine interface (eHMI) to realize safe, secure, and comfortable transportation. We conducted an experimental study to determine how the posture of the person seated in the driver’s seat of a vehicle traveling on the mainline affects the driving maneuvers and psychological aspects of a driver attempting to enter the mainline from the parking lot of an off-road facility. The results showed that when the person sitting in the driver’s seat gazed at a smartphone, assuming the car was an automated vehicle, the driver’s subjective evaluation of the driving operation and “smoothness” of merging onto the mainline showed a reaction of hesitation in merging. This suggests that a specific and clear presentation of information by the eHMI is necessary when providing information on “intendment of give way.”
Published Version
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