Traffic Signal Plans to Decongest Street Grids

Two new synchronization strategies are developed for signalized grids of two-directional streets. Both strategies are found to reduce congestion significantly more than do other approaches. One of the strategies is static and the other adaptive. Both use a common timing pattern for all signals on the grid but use a different offset for each. The static strategy serves the morning rush by providing perfect forward progression on all streets in the directions that point toward a reference intersection, one that is located near the center of gravity of all workplaces. For the evening rush, perfect progression is achieved for all travel directions that point away from the reference intersection. The adaptive strategy toggles between this forward synchronization mode and a second mode suited for congestion, but only in a pre-determined district surrounding the reference intersection. Toggling is based on the district’s real-time traffic density.

• Record URL:
  • https://doi.org/10.5038/CUTR-NICR-Y1-1-2.2
• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/66293
• Summary URL:
  • https://rosap.ntl.bts.gov/view/dot/67530
• Supplemental Notes:
  • This document was sponsored by the U.S. Department of Transportation, University Transportation Centers Program.
• Corporate Authors:

  University of California, Berkeley

  Institute of Transportation Studies
  McLaughlin Hall
  Berkeley, CA  United States  94720

  National Institute for Congestion Reduction

  University of South Florida
  Tampa, FL  United States  33620

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590
• Authors:
  • Sadek, Bassel
  • Godier, Jean Doig
  • Cassidy, Michael J
  • Daganzo, Carlos F
• Publication Date: 2022-10-28

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Figures; References; Tables;
• Pagination: 31p

Subject/Index Terms

• TRT Terms: Congestion management systems; Peak hour traffic; Traffic signal control systems; Traffic signal timing; Traffic simulation
• Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting;

Filing Info

• Accession Number: 01872256
• Record Type: Publication
• Contract Numbers: 69A3551947136; A3551947136; #79070-00-SUB C
• Files: UTC, NTL, TRIS, ATRI, USDOT
• Created Date: Jan 31 2023 2:55PM