§ Mr. Ashtonasked the Secretary of State for the Environment what are the criteria needed for the installation of traffic signals at dangerous road junctions.
§ Mr. Eldon GriffithsA need to reduce accidents or congestion or to replace police supervision. The minimum amount of traffic justifying signals is taken to be an average flow over 16 hours of the day of about 300 vehicles per hour of which not less than 100 are on the minor road.