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. 2011 Traffic Signal Operations Self Assessment. Washington, DC: NTOC, 2011. 2007 National Traffic Signal Report Card Technical Report. Washington, DC: NTOC, 2007. 2005 National Traffic Signal Report Card Technical Report. Washington, DC: NTOC, 2005. Traffic Signal Audit Guide. Washington, DC: NTOC, 2007. Improving Traffic Signal Management and Operations: A Basic Service Model. Washington, DC, Federal Highway Administration. 2009. 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.