Abstract
Recently, by the practical use of ITS, it is promoted that a driver is provided a lot of quantity and various kind of information from the surroundings and vehicle all the more. Particularly, the diffusion rate of the multifunctional car navigation system has being a marked increase. As such, it is important to examine the effective presentation method by the car navigation system in the driving situations. This paper describes the examination based on experimental results that the difference of the driver's behavior between the route guidance by the passenger's voice and the route guidancc by the computer synthetic sound. In addition, it is examined that the frequency of the driver's gaze to discrete observation subjects at city road.
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