"The functional classification of a road is the class or group of roads to which the road belongs. There are three main functional classes as defined by the United States Federal Highway Administration: arterial, collector, and local."@en . . . . . "The functional classification of a road is the class or group of roads to which the road belongs. There are three main functional classes as defined by the United States Federal Highway Administration: arterial, collector, and local."@en . . "1553"^^ . . "Functional classification"@en . . "13258103"^^ . . . . . . . "1048170652"^^ . . .