TRAFFIC CONTROL

Four attempts at traffic control in areas with widely different problems are described. The areas included in the special feature are Norwich, Torbay, Hull and Glasgow. One of the most recent fully co-ordinated automated urban traffic control systems has been planned for the Norwich road network. Up to 20 fixed time signal plans can be selected to control 45 intersections and 60 pelican crossings. Seven closed circuit television cameras are being used to monitor major traffic problems. Congestion at some roundabouts has been removed by introducing some approach signalling at selected sites, where the flow is particularly heavy. A compact system, designed to run without an operator, has been introduced in Torbay and Hull. The Torbay scheme has 12 fixed time plans, one for winter and one for summer, providing co-ordinated signals, variations in signal timings, queue detection, emergency vehicle priority and signal monitoring. Movement in Hull is restricted by the river which can only be crossed by a number of opening bridges. The system controls 18 signals, 12 crossings, seven diversion signs and six queue detectors. A description is given of the urban motorway and expressway control in Glasgow. Details are given of the methods used and the series of ground rules prepared for the operation of motorway signals. Reference is made to work carried out by the Transport and Road Research Laboratory, Crowthorne, Berks. (TRRL)

• Corporate Authors:

  IPC Building and Contract Journals Limited

  Surrey House, 1 Throwley Way
  Sutton, Surrey SM1 4QQ,   England 
• Publication Date: 1980-6

Media Info

• Features: Figures; Photos;
• Pagination: p. 14
• Serial:
  • Surveyor-Public Authority Technology
  • Volume: 155
  • Issue Number: 4592
  • Publisher: IPC Building and Contract Journals Limited

Subject/Index Terms

• TRT Terms: Area traffic signal control; Beltways; Freeways; Intersections; Roundabouts; Signalized intersections; Television; Traffic congestion; Traffic control; Traffic signal control systems; Traffic signals; Urban areas; Urban highways
• Geographic Terms: United Kingdom
• Old TRIS Terms: Traffic control systems
• ITRD Terms: 669: Area traffic control; 632: Congestion (traffic); 455: Junction; 2752: Motorway; 438: Roundabout; 6949: Television; 654: Traffic control; 565: Traffic signal; 8119: United Kingdom; 313: Urban area
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 00324339
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Sep 16 1981 12:00AM