4. The method of claim 3, wherein step (G) is performed by the further substeps of determining whether any street within the second possible street set has an associated speed range that corresponds to the speed of travel of the vehicle and placing such streets within a third possible street set; and determining which street from within the third possible street set is closest to the placement of the vehicle and defining the street where the vehicle is located as the closest street from within the third possible street set.
4. The method of claim 3, wherein step (G) is performed by the further substeps of determining whether any street within the second possible street set has an associated speed range that corresponds to the speed of travel of the vehicle and placing such streets within a third possible street set; and determining which street from within the third possible street set is closest to the placement of the vehicle and defining the street where the vehicle is located as the closest street from within the third possible street set. 5. The method of claim 4, wherein the third possible street set contains no streets and wherein step (G) is performed by the further substeps of determining which street from within the second possible street set is closest to the placement of the vehicle and defining the street where the vehicle is located as the closest street from within the second possible street set.