Evolution of Advanced Transit Signal Priority with Gap-Based Signal Recovery Strategy

Transit Signal Priority (TSP) systems are implemented with the goal of reducing travel times for bus passengers and ensuring that buses adhere to schedules. TSP systems encounter trouble when there are multiple bus requests, heavy traffic conditions on cross-streets, or uncertain bus arrival times. In this study, existing logic concepts for TSP strategies will be modified by assuming access to video detection technologies to accurately provide bus and vehicle locations. The effect of these modifications are examined by testing different scenarios in CORSIM on parts of the Austin, Texas downtown network during peak hours. Along with the “Base” scenario, other scenarios are designed to test variations of (1) whether cross-streets are compensated for lost green time and (2) what sort of red truncation logic is used – traditional logic or logic that relies on video technology to gauge traffic conditions. Simulations will include bus occupancy levels to show the effect of switching between commute modes.

Language

• English

Project

• Status: Completed
• Funding: $112499
• Contract Numbers:

  69A3551747133

• Sponsor Organizations:

  Center for Advanced Multimodal Mobility Solutions and Education

  University of North Carolina, Charlotte
  Charlotte, NC  United States  28223

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590
• Managing Organizations:

  University of North Carolina, Charlotte

  Department of Civil and Environmental Engineering
  9201 University City Boulevard
  Charlotte, NC  United States  28223-0001
• Project Managers:

  Fan, Wei

• Performing Organizations:

  University of Texas at Austin

  Austin, TX  United States  78712
• Principal Investigators:

  Machemehl, Randy

• Start Date: 20171001
• Expected Completion Date: 20190930
• Actual Completion Date: 20190930

Subject/Index Terms

• TRT Terms: Bus transit; Detection and identification technologies; Microsimulation; Signalization; Signalized intersections; Traffic control; Traffic signal phases; Traffic signal priority
• Identifier Terms: CORSIM (Traffic simulation model)
• Geographic Terms: Austin (Texas)
• Subject Areas: Highways; Operations and Traffic Management; Public Transportation;

Filing Info

• Accession Number: 01652818
• Record Type: Research project
• Source Agency: Center for Advanced Multimodal Mobility Solutions and Education
• Contract Numbers: 69A3551747133
• Files: UTC, RiP
• Created Date: Dec 3 2017 9:50AM