The first use of a protected busway was the East Side Trolley Tunnel in Providence, Rhode Island. It was converted from trolley to bus use in 1948. However, the first comprehensive BRT system in the world was the Busway in Runcorn, England. First conceived in the Runcorn New Town Masterplan in 1966, it opened for services in October 1971 and all were operational by 1980. The central station is at Runcorn Shopping City where buses arrive on dedicated raised busways to two enclosed stations. Professor Arthur Ling, Runcorn Development Corporation's Master Planner, said that he had invented the concept while sketching on the back of an envelope. The town was designed around the transport system, with most residents no more than five minutes walking distance, or , from the Busway.