A distinctive feature of Stevenage is its urban landscape. It has many roundabouts, few traffic lights, a network of completely segregated cycleways, and some of the tallest street lights in Britain. Eric Claxton was chief engineer of Stevenage from 1962 to 1972, and the comprehensive separate cycle network was planned and implemented by him during that period. Despite this network, the bike mode share is 2.7%. Claxton was also of the view that Stevenage should contain as few traffic lights as possible, hence his preference for roundabouts to regulate traffic flow. He was so adamant about roundabouts that he had a house built for himself on the gyratory system in the Old Town.