Converting Intersections from Two-Way Stop Control to All-Way Stop Control

Converting intersections from two-way stop control (TWSC) to all-way stop control (AWSC) has been shown to significantly reduce traffic crashes. Recent initiatives by the Delaware Department of Transportation (DOT) and North Carolina DOT reported substantial reductions in fatal and injury crashes at treated intersections, particularly for front-impact crashes. To help reverse a nationwide upward trend in traffic fatalities, and based on successes from these two programs, other states have expressed interest in developing AWSC programs. State DOTs are looking for guidelines to effectively build on the successes in Delaware and North Carolina. OBJECTIVE: The objective of this research is to develop a guide and outreach materials for converting intersections from TWSC to AWSC.

• Record URL:
  • http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=5840

Language

• English

Project

• Status: Active
• Funding: $400,000.00
• Contract Numbers:

  Project 03-154

• Sponsor Organizations:

  State Departments of Transportation (participating member states of American Association of State Highway Transportation Officials (AASHTO))

  American Association of State Highway Transportation Officials (AASHTO)
  444 North Capitol Street, NW
  Washington, DC  United States  20001

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Managing Organizations:

  National Cooperative Highway Research Program (NCHRP)

  Transportation Research Board
  500 Fifth Street, NW
  Washington, DC  United States  20001
• Project Managers:

  Retting, Richard

• Start Date: 20260504
• Expected Completion Date: 20281101
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Guidelines; Highway design; Multiway stop signs; Traffic safety
• Subject Areas: Design; Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 01956601
• Record Type: Research project
• Source Agency: Transportation Research Board
• Contract Numbers: Project 03-154
• Files: TRB, RIP
• Created Date: May 28 2025 1:24PM