CONTROL OF CONGESTED NETWORKS IN URBAN AREAS

In congested networks of urban streets, serious loss of capacity is likely to occur when downstream queues extend back into an upstream junction - in extreme cases, this can lead to gridlock. The effect is well known and of concern to traffic engineers and road users alike but, rather surprisingly, little research seems to have been conducted to measure the loss of capacity or to prove the effectiveness, or otherwise, of the various methods of control that exist or have been proposed. This paper comments on the design, relevant to congested conditions, of two European methods of controlling networks of traffic signals - one operates off-line and the other in realtime. The use of such systems for managing queue location and influencing route choice is discussed briefly before the concluding remarks.

• Supplemental Notes:
  • First in a series on Management of Traffic Systems conducted by Alberto J. Santiago and Sam Yagar on behalf of the Federal Highway Administration (FHWA).
• Corporate Authors:

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • ROBERTSON, D I
• Conference:
  • Large Urban Systems. Proceedings of the Advanced Traffic Management Conference
  • Location: St. Petersburg, Florida
  • Date: 1993-10-3 to 1993-10-8
• Publication Date: 1993-10

Language

• English

Media Info

• Features: References;
• Pagination: v.p.

Subject/Index Terms

• TRT Terms: Networks; Queuing; Real time control; Route choice; Technology; Traffic congestion; Traffic signal control systems
• Uncontrolled Terms: Transportation networks
• Geographic Terms: Europe
• Old TRIS Terms: Real time operations
• Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00662937
• Record Type: Publication
• Files: TRIS, USDOT
• Created Date: Jul 7 1994 12:00AM