Abstract: A navigation system may determine an approximate position of a navigation device and determine a geographical area in which the navigation device is located based on the approximate position. The determined geographical area may be one of a plurality of geographical areas included in a routing area. Each geographical area may be associated with one of a plurality of positioning procedures each associated with a predetermined parameter set. The navigation system may select the positioning procedure associated with the determined geographical area and determine the position of the navigation device according to the selected positioning procedure and the associated predefined parameter set.

Abstract: A method for navigation of a vehicle using a navigation system with stored map data having road segments comprising determining a current road segment and a current position of the vehicle in the current road segment and receiving a user input command. The method determines a destination in the current road segment or in another road segment of a parallel lane of the current road segment, the determining being initiated by the input. A route from the current position to the destination is calculated in the absence of a turn-around maneuver within the current road segment.

Abstract: A method for navigation of a vehicle using a navigation system with stored map data having road segments comprising determining a current road segment and a current position of the vehicle in the current road segment and receiving a user input command. The method determines a destination in the current road segment or in another road segment of a parallel lane of the current road segment, the determining being initiated by the input. A route from the current position to the destination is calculated in the absence of a turn-around maneuver within the current road segment.

Abstract: A navigation system may determine an approximate position of a navigation device and determine a geographical area in which the navigation device is located based on the approximate position. The determined geographical area may be one of a plurality of geographical areas included in a routing area. Each geographical area may be associated with one of a plurality of positioning procedures each associated with a predetermined parameter set. The navigation system may select the positioning procedure associated with the determined geographical area and determine the position of the navigation device according to the selected positioning procedure and the associated predefined parameter set.