Urban Roadway Classification

Road classification systems are the basis for defining function and, in turn, the design criteria for the world’s street networks. The traditional classification systems have been based on the mobility and access functions of roads for motor vehicle traffic. Other road users and road uses have been largely ignored in this important step of the road design process. This article describes alternative classification systems developed by the American Association of Architects, the Province of Ontario, Metro Portland, and the Region of Hamilton-Wentworth.