抄録
After the subjects watched the drive recorder video, they were asked to draw a map from memory and answer the direction of the end point as seen from the start point, the driving distance, and the linear distance. The subjects were asked to watch two courses, "Course A with sound" and "Course B without sound," or "Course A without sound" and "Course B with sound. The data of "Course A with sound" and "Course A without sound" were compared, and no significant differences were found. The same was seen for "Course B with sound" and "Course B without sound.