Patent Document ID: 9599488
Application ID: 14269221
Patent Flag: 1

Claim One:
1. A method of providing navigational guidance to a vehicle over a transportation network, said transportation network comprised of routes with traffic signals, the method comprising: providing, to a processor, trip information, said trip information comprising an origin and a destination for said vehicle; setting a radius measured from a location of said vehicle within said transportation network, said radius being set based on a traffic density associated with the location of said vehicle so that a number of traffic signals are included within said radius; providing, to the processor, said radius; obtaining data from one or more traffic signals within said radius, at intervals of time, said data relating to one or both of the following: information on the state of at least one of said traffic signals for a respective interval of time; and routing table information, said routing table information indicative of state of traffic for routes to said destination on said transportation network; processing said data with said trip information to identify optimal route choices to said destination on said transportation network for said vehicle; and providing said optimal route choices to said vehicle.