July 14, 2015
Our nation’s roadway system contains a functional hierarchy which provides each road with a designation based on its primary purpose. At the top of the hierarchy are freeways and expressways designed to maximize “Point A to Point B” mobility that feature limited access, i.e. access at only high speed interchanges, no intersections or driveways. There are also arterials that are roads that have traffic signals at intersections and access points at larger frequency spacing. These arterials are fed by collectors and local streets, which have the main purpose to connect specific activities (residences, retail stores, industries). Put together, this network enables point to point services, a notable advantage the road transport has over other transport modes.