References

Federal Highway Administration. Standard Specifications for Structural Supports for Highway Signs, Luminaries and Traffic Signals. Washington, DC. US Printing Office. 2009.

Federal Highway Administration. Traffic Control Devices Handbook. Washington, DC. US Printing Office. 2001.

Institute of Transportation Engineers. ITE Manual of Traffic Signal Design. Washington, DC. US Printing Office. 1991.

Institute of Transportation Engineers. ITE Traffic Signal Installation and Maintenance Manual. Washington, DC. US Printing Office. 1989.

McShane and Roess. Traffic Engineering by McShane and Roess. Washington, DC. US Printing Office. 1990.

US Department of Transportation, Federal Highway Administration. Manual on Uniform Traffic Control Devices. Washington, DC. 2009 Edition including Revision 1 and Revision 2, dated May 2012.