Abstract
This study discussed driver's sensitivity and adaptability to variation of handling characteristics. Firstly, we constructed an experimental vehicle, which is installed steer-by-wire (SBW) system. In order to seize basic characteristic of driver adaptation to time variation of the steering gear ratio. The amount of correcting maneuver is, on the whole, increased with the steering gear ratio increases. And smoothness of the steering maneuver is decreased. There are some situations that the maneuver performance is recovered gradually by adaptive handling. And we focus on these situations, we conducted some experiments using desk top experimental device. The adaptation of handling was explained by experimental results.
