Local Ramp Metering in the Presence of a Distant Downstream Bottleneck

The paper addresses a macroscopic-simulation investigation on the performance of feedback local ramp-metering controller ALINEA and its PI (Proportional-Integral) extension for freeway stretches with a bottleneck at a distant location downstream of the metered on-ramp. The investigation indicates that the ramp metering performance of ALINEA (a simple controller with an Integral term) deteriorates in the distant downstream bottleneck case, while a significant improvement may be obtained by addition of a proportional term and by specification of suitable parameter values of the controller. The selected parameter values of the extended ALINEA regulator of the PI type are demonstrated to be suitable for a range of different bottleneck distances, which indicates that no fine-tuning would be necessary in field applications.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Wang, Yibing
  • Schieferstein, Andrea
  • Papageorgiou, Markos
• Conference:
  • Transportation Research Board 86th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2007-1-21 to 2007-1-25
• Date: 2007

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; References;
• Pagination: 28p
• Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

• TRT Terms: Bottlenecks; Local transportation; On ramps; Operations; Ramp metering; Traffic congestion; Traffic control; Traffic control devices; Traffic flow
• Uncontrolled Terms: Downstream traffic
• Subject Areas: Administration and Management; Geotechnology; Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 01049513
• Record Type: Publication
• Report/Paper Numbers: 07-1817
• Files: TRIS, TRB
• Created Date: May 21 2007 1:18PM