A preferred route may be determined from an origin location to a destination location. The preferred route avoids a particular maneuver or particular maneuvers identified by a user. The determination is made by processing directed links (e.g., one-way edges) in a graph that includes one or more links...http://www.google.ca/patents/US7133771?utm_source=gb-gplus-sharePatent US7133771 - Automated route determination to avoid a particular maneuver
