Routing method for road navigation devices with ranking of route alternatives and road navigation device

The method according to the invention comprises the steps of collecting traffic information about each road segment covered by the vehicle at each junction reached by the same vehicle; in accordance with at least one pre-selected navigation mode, defining the route alternatives containing the road segments starting from the next junction and leading to the destination; collecting traffic information about the route alternatives running from the next junction; based on the traffic information about the single route alternatives, assigning a Q-value to each route alternative running from the next junction; ranking the route alternatives according to their Q-value, and informing the user about the rank of the road segments running from the next junction. The navigation device according to the invention is adapted to perform the above method.