Systems and methods for providing navigation guidance in pseudo-navigation/automatic direction indicator modes

摘要

Methods and systems for providing navigation guidance in pseudo-navigation/automatic direction indicator modes. Each system includes at least one client integrated with a mobile communication device (e.g. PDA, cellular telephone, etc.) and configured to send a request for information of a nominal route to a server. The server calculates the nominal route and sends the information to the client via wireless carriers and networks. When the user deviates from a nominal route, the client determines a recovery point on the nominal route. Then, the client provides navigation guidance in a pseudo-navigation mode or an automatic direction indicator mode without resorting to the server for a new route until the user recovers on the nominal route via the recovery point.