Abstract
In this study, avoidance areas, based on avoidance locus in human passing behavior, were investigated by two experiments. In order to examine general characteristics of passing behavior, an experiment on a road was conducted. In the experiment, passing behaviors were recorded using a VTR. The passing behavior was classified into three types based on its path. The most typical type observed in the first experiment was as follows: The subject returned to the original locus he had before starting avoidance motion, after the subject had finished passing. In order to analyze and identify avoidance areas of this type, an experiment in a laboratory was conducted. In this experiment, the subjects passed an experimenter who stood, walked, and ran with short steps. Subjects' motion paths under these conditions were analyzed and the following two characteristics were found: (1) locus agreed well with the catenary, and (2) walking velocity was constant in passing. Avoidance areas were calculated using these characteristics. Results indicated that an avoidance area of an experimenter standing was similar to that of an experimenter walking.
