A Cell Transmission Model for Signal Timing Optimisation in Work Zones

A work zone is a section on an urban highway that is closed for road construction or utility maintenance. Single-lane closures on two-lane highways require a suitable signal control system for managing two-way traffic. The problem becomes more complicated if there are two closely spaced work zones in which the upstream and downstream traffic signals must be well coordinated. Without proper control, vehicle queues may be developed in between the work zones and heavy delays may be induced. Traditionally, vehicle queues have been represented by numerical figures without consideration of the actual space concept and blocking back effect. In this study, a two-lane highway with two closely spaced work zones is modeled using the cell transmission model (CTM) that encapsulates the fundamental relationships between s peed, flow, and density, with an explicit account of the spatial queue dynamics. Total delay in the highway system is adopted as objective for optimization. The problem is formulated as a Binary-Mixed-Integer-Linear-Program (BMILP), and solved by standard brand-and-bound techniques. A fixed length two-lane highway with various work zone configurations is given as a numerical example for demonstrating the applicability of the proposed design method.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780080450926
• Supplemental Notes:
  • Abstract reprinted with permission from Elsevier.
• Corporate Authors:

  Elsevier

  Linacre House, Jordan Hill
  Oxford,   United Kingdom  OX2 8DP
• Authors:
  • Wong, C K
  • Wong, S C
  • Lo, Hong K
• Conference:
  • 4th IMA International Conference on Mathematics in Transport
  • Location: London , United Kingdom
  • Date: 2005-9-7 to 2005-9-9
• Publication Date: 2007

Language

• English

Media Info

• Media Type: Print
• Edition: First
• Features: Figures; References; Tables;
• Pagination: pp 307-319
• Monograph Title: Mathematics in Transport. Selected Proceedings of the 4th IMA International Conference on Mathematics in Transport

Subject/Index Terms

• TRT Terms: Lane closure; Maintenance practices; Mixed integer programming; Traffic delays; Traffic signal control systems; Traffic signal timing; Urban highways; Work zone traffic control; Work zones
• Uncontrolled Terms: Cell transmission models
• Subject Areas: Highways; Maintenance and Preservation; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 01081071
• Record Type: Publication
• ISBN: 9780080450926
• Files: TRIS
• Created Date: Nov 26 2007 9:54AM