Patent ID: 8606511

Claim:
A method of providing turn-by-turn navigation instructions comprising: receiving, at a server at a call center, a request from a user of a vehicle navigation device to receive navigational instructions to enable travel from a geographic origination location to a geographic destination location; calculating, at the server, a first set of turn-by-turn navigation instructions defining a first route between the geographic origination location and the geographic destination location and providing the first set of turn-by-turn navigation instructions to the user; receiving, at the server, a reroute request from the user at a point on the first route and determining whether a first road on a portion of the first route not yet reached by the user is closed based at least in part on the reroute request; calculating, at the server, a second set of turn-by-turn navigation instructions defining a second route between the geographic origination location and the geographic destination based on the reroute request, wherein the second route does not include the first road, and providing the second set of turn-by-turn navigation instructions to the user.