Additional Resources

Philip J. Tarnoff and Javier Ordonez. Signal Timing Practices and Procedures: State of the Practice. Washington, DC: Institute of Transportation Engineers, 2004.

Traffic Signal Timing: Moving State-of-the-Practice Closer to State of the Art. Intelligent Transportation Systems for Traffic Control, pg.1. USDOT ITS Joint Program Office. January 2007.

Benefits of Retiming Traffic Signals. Washington, DC: ITE, 2005.2007.

2007 Traffic Signal Operations Self Assessment. Washington DC: NTOC, 2006 (

Assessment of Puget Sound Regional Traffic Signal Operations Program

Mid-America Regional Council Transportation Department’s “Operation Green Light”

Overview of the 2007 National Traffic Signal Report Card PowerPoint

Reno, Nevada’s Traffic Signal Retiming Project

Institute of Transportation Engineers

American Association of State Highway and Transportation Officials

Federal Highway Administration

American Public Works Association IMSA Intelligent Transportation Society of America