§ 112. Sir J. Rodgersasked the Minister of Transport what is her official policy now on the construction of roundabouts on motorways, by-passes, trunk roads and class one roads.
§ Mr. SwinglerRoundabouts are provided at busy intersections where the cost of a flyover or underpass is not justified by the volume of traffic. They are also incorporated in grade separated junctions where turning movements are particularly heavy.
Where grade separation is not immediately justified, but may be needed later, roundabouts are so designed that they can be converted without wasteful expenditure.