Placement and Management of Bus Bypass Segments in Dense, Congested Cities

In this research, simulation is used to explore how a bus bypass segment, also called a queue jump, affects traffic on a signalized arterial. Residual queues form at the site’s critical bottleneck and expand to street links upstream. A bypass, when designed to serve a bus stop as per AASHTO guidelines, is shown to reduce bus delays—if the stop resides on a congested link that is upstream of the one feeding traffic to the critical bottleneck. In contrast, using a bypass for a bus stop located immediately upstream of the critical bottleneck starves that bottleneck of flow. The damage thus done to car traffic also penalizes buses operating in the congested lanes that they share with cars. This damaging cross-modal influence can nullify the benefits that buses receive from the bypass segment. The value of a simple alternative, and the generality of the present findings, are verified via parametric tests.

• Record URL:
  https://nicr.usf.edu/2023/11/27/1-4-1-placement/

Language

• English

Project

• Status: Completed
• Funding: $120000
• Contract Numbers:

  69A3551947136

  79075-00-SUBC

• Sponsor Organizations:

  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
• Managing Organizations:

  National Institute for Congestion Reduction

  University of South Florida
  Tampa, FL  United States  33620
• Project Managers:

  Li, Xiaopeng

• Performing Organizations:

  University of California, Berkeley

  444 Davis Hall
  Berkeley, CA  United States  94720
• Principal Investigators:

  Cassidy, Michael

  Daganzo, Carlos F

• Start Date: 20210415
• Expected Completion Date: 20220930
• Actual Completion Date: 20231108
• USDOT Program: University Transportation Centers Program

Subject/Index Terms

• TRT Terms: Arterial highways; Bus stops; Bypasses; Traffic flow; Traffic simulation
• Subject Areas: Highways; Operations and Traffic Management; Public Transportation;

Filing Info

• Accession Number: 01901795
• Record Type: Research project
• Source Agency: National Institute for Congestion Reduction
• Contract Numbers: 69A3551947136, 79075-00-SUBC
• Files: UTC, RIP
• Created Date: Dec 7 2023 10:08PM