Abstract: A vehicle navigation system is described, comprising an onboard navigation unit installed on board a vehicle that can be used by a user to set target destinations and an operations centre communicating with the onboard navigation unit. The onboard navigation unit is configured to transmit a target destination and a static road route to the operations centre. The operations centre is configured to calculate a dynamic road route based on the target destination, the static road route and information regarding the traffic conditions and road conditions of said road network and/or the static road route. In addition, the operations centre compares the calculated dynamic road route with the static road route and transmits information associated with a road route that is selected on the basis of the comparison to the onboard navigation unit.