Abstract
It tends to increase the information quantity that the driver has to process now. Yet, not much is known about influence on the driving with watching Navigation systems. Therefore it purposes to evaluate the influence on the drivers watching Navigation systems on the car and study efficacious signpost for the drivers by the driving simulator. Simulated driving course is like cities. Taking the eye's behavior, the subject drives in that course with watching the Navigation systems. Above all, the horizontal eye's moving affects driver's handing operations and the vertical eye's moving affects the operating accelerator and brake, and what's more, it is more dangerous to increase the time watching the Navigation systems.
