A method for arbitrating between vehicle navigation systems in the event that multiple systems are concurrently activated so that information is provided to a user by only one navigation system at a time. This method of arbitration reduces the possibility of user confusion that could otherwise occur if multiple vehicle navigation systems were simultaneously providing the user with information. According to one embodiment, the arbitration method is used in conjunction with a telematics-based system and a CD-based system that both provide turn-by-turn spoken driving directions. The method can also be used to arbitrate between any vehicle-based sources of electronically-supplied audio speech, particularly where the systems are connected to a common vehicle network that allows software control of the different vehicle systems.
Method for arbitrating between multiple vehicle navigation systems