SOME GENERAL RESULTS ON THE OPTIMAL RAMP CONTROL PROBLEM

In this paper, the authors consider a freeway system comprised of a freeway section and its entry/exit ramps, and formulate the ramp control problem as a dynamic optimal process to minimize the total time spent in this system. Within this framework, they are able to show when ramp metering is beneficial to the system in terms of total time savings, and when it is not, under the restriction that the controlled freeway has to serve all of its ramp demand, and the traffic flow process follows the rules prescribed by the LWR theory with a triangular flow-density relationship. They also provide solution techniques to the problem and present some preliminary numerical results and empirical validation.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0968090X
• Corporate Authors:

  Elsevier

  The Boulevard, Langford Lane
  Kidlington, Oxford  United Kingdom  OX5 1GB
• Authors:
  • Zhang, Hongli
  • Ritchie, S G
  • Recker, W W
• Publication Date: 1996-4

Language

• English

Media Info

• Pagination: p. 51-69
• Serial:
  • Transportation Research Part C: Emerging Technologies
  • Volume: 4
  • Issue Number: 2
  • Publisher: Elsevier
  • ISSN: 0968-090X
  • Serial URL: http://www.sciencedirect.com/science/journal/0968090X

Subject/Index Terms

• TRT Terms: Freeways; Interchange ramps; Ramp metering; Traffic flow theory
• Old TRIS Terms: Exits; Freeway entrances and exits; Freeway ramps
• Subject Areas: Highways; Operations and Traffic Management; I71: Traffic Theory;

Filing Info

• Accession Number: 00725749
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Sep 16 1996 12:00AM