NAVIGATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To solve a problem that timing of a guide at an intersection is not appropriate in such a case that the guide at the intersection interferes when a driver listens to a radio and a CD player and such the guide is unnecessary depending on driving technique of the driver because a frequency of the guide at the intersection by sounds is determined to be constant. SOLUTION: This navigation system includes a sound guide frequency setting means for changing setting of a sound guide frequency at the intersection depending on an intention of the driver or a driving environment.