Navigation devices, methods, and programs obtain information indicating a route of a host vehicle, obtain information indicating a position of the host vehicle, and obtain information indicating a form of a number (N) of successive curves (where N is an integer of 2 or more) in front of the host vehicle position on the route. The devices, methods, and programs excite a vibrator provided at a position where contact with a driver of the host vehicle is possible in a vibration mode corresponding to the form of the N successive curves when the host vehicle reaches a position at a predetermined distance from the closest curve among the N successive curves.