Geographic database including data for providing instructions about tollways

摘要

A navigation system provides a user thereof with warnings or advisories about toll gates that require exact change. The warnings or advisories are provided when the navigation system calculates a solution route to a destination specified by the user. The warnings or advisories are also provided when the user queries the navigation system about a particular specified portion of a road. The navigation system uses a geographic database that includes data about roads in a geographic region. The geographic database includes data about toll gates located along portions of roads including data about whether a toll gate along a portion or a road requires exact change.