Consideration of "Recall-Rest-Walk" During Signal Coordination

Long-time Utah Department of Transportation (UDOT) traffic signal practice has been to place pedestrian phases parallel to the mainline in “pedestrian recall” and “rest-in-walk” for coordinated signals in a corridor during signal coordination. This means that in many cases the walk indication (for crossings of the side streets) comes on every time and stays on for most of the time during the main street thru green interval, during daytime hours, without the need for actuation (pedestrian detection/push-button use). This technique is also sometimes described as maximizing the length of the walk interval, and it is designed to make use of “leftover” time associated with a parallel vehicular phase (beyond the minimum needed to serve the pedestrian crossing), thus hoping to reduce pedestrian delay, increase pedestrian signal compliance, and accommodate slower pedestrians without significantly constraining a signal’s vehicular operations and cycle. The objective of this research project is to consider the safety and operational implications (advantages and disadvantages) of “recall-rest-walk” pedestrian phasing at coordinated traffic signals in Utah. The project will offer recommendations for UDOT traffic signal timing/phasing practices regarding pedestrians, as well as recommendations for future monitoring and research.

Language

• English

Project

• Status: Active
• Funding: $60,000.00
• Contract Numbers:

  258673

• Sponsor Organizations:

  Utah Department of Transportation

  Research and Innovation Division
  Salt Lake City, UT  United States  84114
• Managing Organizations:

  Utah Department of Transportation

  Research and Innovation Division
  Salt Lake City, UT  United States  84114
• Project Managers:

  Jensen, Travis

• Performing Organizations:

  Utah State University, Logan

  Civil and Environmental Engineering Department
  Logan, UT  United States  84332
• Principal Investigators:

  Singleton, Patrick

• Start Date: 20241210
• Expected Completion Date: 20260630
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Pedestrian clearance interval (Traffic signals); Pedestrian movement; Traffic signal control systems; Traffic signal phases
• Geographic Terms: Utah
• Subject Areas: Highways; Operations and Traffic Management; Pedestrians and Bicyclists; Safety and Human Factors;

Filing Info

• Accession Number: 01941751
• Record Type: Research project
• Source Agency: Utah Department of Transportation
• Contract Numbers: 258673
• Files: RIP, STATEDOT
• Created Date: Jan 5 2025 9:43PM