Traffic Signal Change and Clearance Interval Pooled Fund Study

The goal of the Traffic Signal Change and Clearance Interval Pooled Fund Study is to ensure the application of traffic signal change and clearance intervals maximize the safe transfer or right of way at signalized intersections. The objective of the Pooled Fund Study is to provide a forum for participants and interested observers to collaboratively identify and pursue research needs that extend existing knowledge about the interaction between human factors and traffic signal change intervals and clearance intervals. The research findings of the pooled fund study will clarify existing assumptions and provide supplemental procedures, and methodology to appropriately and consistently apply current and recommended practices for the computation of traffic signal change and clearance intervals.


  • English


  • Status: Programmed
  • Funding: $1448000
  • Contract Numbers:


  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    Connecticut Department of Transportation

    2800 Berlin Turnpike
    P. O. Box 317546
    Newington, CT  United States  06131-7546

    Georgia Department of Transportation

    600 West Peachtree St
    Atlanta, GA  United States  30308

    Illinois Department of Transportation

    2300 S. Dirksen Parkway
    Springfield, IL  United States  62764

    Indiana Department of Transportation

    Indiana Government Center North
    100 North Senate Avenue
    Indianapolis, IN  United States  46204-2249

    Iowa Department of Transportation

    800 Lincoln Way
    Ames, IA  United States  50010

    Mississippi Department of Transportation

    P.O. Box 1850
    Jackson, MS  United States  39215-1850

    Nebraska Department of Transportation

    1500 Highway 2
    P.O. Box 94759
    Lincoln, NE  United States  68509-4759

    New Hampshire Department of Transportation

    John O. Morton Building
    P.O. Box 483
    Concord, NH  United States  03302-0483

    Oregon Department of Transportation

    355 Capitol St. NE
    Salem, OR  United States  97301-3871

    Pennsylvania Department of Transportation

    Keystone Building
    400 North Street
    Harrisburg, PA  United States  17120

    Utah Department of Transportation

    4501 South 2700 West
    Project Development
    Salt Lake City, UT  United States  84114-8380

    Virginia Department of Transportation

    1408 E Broad Street
    Richmond, VA  United States  23219

    Washington State Department of Transportation

    Transportation Building
    Olympia, WA  United States  98504

    Tennessee Department of Transportation

    James K. Polk Building
    Fifth and Deaderick Street
    Nashville, TN  United States  37243-0349

    North Carolina Department of Transportation

    P.O. Box 25201
    1 South Wilmington Street
    Raleigh, NC  United States  27611

    New York State Department of Transportation

    50 Wolf Road
    Albany, NY  United States  12232

    City of Seattle

    Seattle, WA  United States 

    Maryland Department of Transportation State Highway Administration

    707 N. Calvert Street
    Baltimore, MD  United States  21202

    Maricopa County

    301 W. Jefferson Street
    Phoenix, AZ  United States  85003

    Portland Bureau of Transportation

    1120 SW 5th Avenue, Suite 1331
    Portland, OR  United States  97204

    Oakland County

    Waterford Township, MI  United States 

    City of Phoenix

    Phoenix, AZ  United States 

    City of Mesa, AZ

    Mesa, Arizona  United States 
  • Project Managers:

    Mackey, Jamie

  • Performing Organizations:


    11951 Freedom Drive
    Reston, Virginia  United States  20190
  • Principal Investigators:

    Hale, David

  • Start Date: 20231201
  • Expected Completion Date: 0
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01760899
  • Record Type: Research project
  • Source Agency: Federal Highway Administration
  • Contract Numbers: TPF-5(470)
  • Created Date: Dec 21 2020 7:05PM