Abstract
In the driver's course inference models which authors developed, three points play the important role. They are the cognitive distance of drivers to the real route distance, the mechanism by which drivers select the turning point based on memories concerning the cognitive distances between two turning points and shape of routes, and the selection probability of the direction in straying. These characteristics of drivers are indispensable to construct a realistic course inference model. Then, in this research three kinds of indoor experiments were conducted with a simulator, and driver's some probabilistic characteristics were clarified by analyzing the result.
