Evaluating Signal Timing Planning Options in Terms of Coordination between Successive Signals at Continuous Flow Intersections (Project G6)

Continuous flow intersections (CFIs) have been proven to increase the capacity for motorized vehicles. However, in a CFI, motorized traffic must go through one or more extra intersections often the crosswalks are multi-staged. Therefore, the coordination among different signals is critical to all movements for a CFI. Moreover, the full benefit of a CFI for motorized traffic can only be achieved at the cost of a complex and multi-staged crosswalk. Past studies that attempted to improve the coordination of the intersections at a CFI primarily focused on motorized traffic. This project will investigate the coordination of crosswalk signals, with the primary focus on pedestrians, at a CFI and its tradeoff with the motorized operation. First, the team will determine the signal timing plan that will maximize the coordination of motorized traffic for a given set of traffic operations and geometric characteristics of a CFI. For this model, the team will assess different crosswalk options regarding the signal coordination for pedestrians and develop an updated signal timing plan. Geometric characteristics critical to pedestrian movements will be identified. The performance of the models developed in these two steps will be compared to estimate the tradeoffs. It is expected that the outcomes of this project will help agencies to make CFI designs more convenient for pedestrians without significantly compromising motorized vehicle operations.

Language

• English

Project

• Status: Active
• Funding: $64750
• Contract Numbers:

  69A3551747104

• Sponsor Organizations:

  Office of the Assistant Secretary for Research and Technology

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

  Southeastern Transportation Research, Innovation, Development and Education Center (STRIDE)

  University of Florida
  365 Weil Hall
  Gainesville, FL  United States  32611
• Project Managers:

  Tucker-Thomas, Dawn

• Performing Organizations:

  North Carolina State University

  Institute for Transportation Research and Education
  909 Capability Drive, Suite 3600
  Raleigh, NC  United States  27606
• Principal Investigators:

  Cunningham, Christopher

• Start Date: 20220401
• Expected Completion Date: 20230331
• Actual Completion Date: 0
• USDOT Program: University Transportation Centers Program

Subject/Index Terms

• TRT Terms: Bicycle crossings; Crosswalks; Intersections; Pedestrians; Traffic flow; Traffic signal timing
• Subject Areas: Highways; Operations and Traffic Management; Pedestrians and Bicyclists; Safety and Human Factors;

Filing Info

• Accession Number: 01854178
• Record Type: Research project
• Source Agency: Southeastern Transportation Research, Innovation, Development and Education Center (STRIDE)
• Contract Numbers: 69A3551747104
• Files: UTC, RIP
• Created Date: Aug 10 2022 2:00PM