Patent ID: 8649975
Filing Date: 2014-02-11
Classification: G01C

Abstract:
1. A method for determining a preferred route using a computer-implemented routing system, the method comprising: using a routing system to access an origin and a destination in a routing graph representing a network of roads and including two or more nodes and one or more links; determining that a first link is included among a set of multiple links in a no-outlet region, wherein the set of multiple links can be exited only by traversing the first link used to enter the set of multiple links; using the routing system to determine a preferred route from the origin to the destination, wherein the routing system excludes the first link based on the determination that the first link is included among the set of multiple links which can be exited only by traversing the first link used to enter the set of multiple links; and communicating the preferred route from the routing system to a user.