Advanced Search
MyIDEAS: Login to save this paper or follow this series

Balancing Efficiency and Equity of Ramp Meters


Author Info

  • Lei Zhang
  • David Levinson

    (Nexus (Networks, Economics, and Urban Systems) Research Group, Department of Civil Engineering, University of Minnesota)


A new freeway ramp control objective - minimizing total weighted travel time is presented in this study. This new objective function is capable of balancing efficiency and equity of ramp meters, while the previous metering objective - minimizing total absolute travel time is purely efficiency-oriented and hence produces a most efficient but least equitable solution. When certain assumptions hold, this metering objective is shown to be equal to minimizing non-linearly weighted ramp delay. A simulation method to achieve the new metering objective is developed and demonstrated using the example of BEEX, a new ramp control strategy also developed in this study, in a microscopic traffic simulator.

Download Info

If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
File URL:
Download Restriction: no

File URL:
File Function: First version, 2007
Download Restriction: no

Bibliographic Info

Paper provided by University of Minnesota: Nexus Research Group in its series Working Papers with number 200508.

as in new window
Date of creation: 2005
Date of revision:
Publication status: Published in ASCE Journal of Transportation Engineering 131(6) pp.477-481.
Handle: RePEc:nex:wpaper:balancingrampmeters

Contact details of provider:
Postal: Dept. of Civil Engineering, 500 Pillsbury Drive SE, Minneapolis, MN 55455
Phone: +01 (612) 625-6354
Fax: +01 (612) 626-7750
Web page:
More information through EDIRC

Related research

Keywords: Ramp Metering; Efficiency; Equity; BEEX; Value of travel time;

Find related papers by JEL classification:


No references listed on IDEAS
You can help add them by filling out this form.


Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
as in new window

Cited by:
  1. Zhang, H.M. & Shen, Wei, 2010. "Access control policies without inside queues: Their properties and public policy implications," Transportation Research Part B: Methodological, Elsevier, vol. 44(8-9), pages 1132-1147, September.
  2. David Levinson & Lei Zhang, 2006. "Ramp Meters on Trial: Evidence from the Twin Cities Metering Holiday," Working Papers 200604, University of Minnesota: Nexus Research Group.
  3. Xinkai Wu & David Levinson & Henry Liu, 2008. "Perception of Waiting Time at Signalized Intersections," Working Papers 200909, University of Minnesota: Nexus Research Group.
  4. Nebiyou Tilahun & David Levinson, 2006. "Selfishness and Altruism in the Distribution of Travel Time and Income," Working Papers 000023, University of Minnesota: Nexus Research Group.
  5. Lei Zhang & David Levinson, 2004. "Optimal Freeway Ramp Control without Origin-Destination Information," Working Papers 200404, University of Minnesota: Nexus Research Group.
  6. Zheng, Nan & Waraich, Rashid A. & Axhausen, Kay W. & Geroliminis, Nikolas, 2012. "A dynamic cordon pricing scheme combining the Macroscopic Fundamental Diagram and an agent-based traffic model," Transportation Research Part A: Policy and Practice, Elsevier, vol. 46(8), pages 1291-1303.
  7. Lei Zhang & Feng xie & David Levinson, 2007. "Illusion of Motion: Variation of Subjective Value of Travel Time on Freeways and Ramp Meters," Working Papers 200903, University of Minnesota: Nexus Research Group.


This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.


Access and download statistics


When requesting a correction, please mention this item's handle: RePEc:nex:wpaper:balancingrampmeters. See general information about how to correct material in RePEc.

For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (David Levinson).

If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

If references are entirely missing, you can add them using this form.

If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

Please note that corrections may take a couple of weeks to filter through the various RePEc services.