Abstract
These days, car navigation system is spread and system that gives road information to drivers is studied hardly. In this report, drivers operate the switches imitated in-the-car loading apparatus, and the influence of switch operation that affects driving operation is considered from the experiment by driving simulator. Road situations for switch operation are four (Straight, Before Curve, Curve and After Curve), and amount of switch operation is two or three. The simulation course is high way. The time of switch operation is long in road situations : Before Curve and Curve. The situations, where number of deviation of driving trace is much, are Before Curve and Curve. The relationship between time of switch operation and size of deviation is shown. Therefore, if trace of driving is deviated, size of deviation is anticipated from of switch operation.
