1. A method for automatically providing traffic telematics information about a travel route of a host vehicle which is traveling on a road system having multiple roads interconnected at multiple road junctions, the method comprising: determining, by one of (i) a central control unit external to the host vehicle or (ii) a traffic telematics unit of the host vehicle, a respective probability of the host vehicle approaching each respective road junction of the multiple road junctions and assigning the determined respective probabilities to the respective road junctions; and transmitting, to one of the central control unit or another vehicle, information identifying the road junctions for which the probability of the host vehicle traveling through is above a predetermined threshold; wherein the probability of a selected junction being traveled through by the host vehicle is determined based on the number of road branches extending from the selected junction, and wherein a road junction having a higher number of road branches is determined to have a higher probability of being traveled through than a road junction having a fewer number of road branches.