sentences:  Average traffic volumes on the highway in 2016 ranged from a minimum of 4,100 vehicles near its western terminus at US 195 to a maximum of 21,000 vehicles in downtown Pullman.Most of the highway between Pullman and Moscow is five lanes wide, with two lanes of traffic in each direction and a center turn lane.The entire route of SR 270 is designated as part of the National Highway System, a national network of roads identified as important to the national economy, defense, and mobility, and is listed as a Highway of Statewide Significance by the state legislature.