1. Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals, 4th Edition, Washington, D.C. USA.
2. AASHTO - American Association of State Highway and Transportation Officials (2004). LRFD Bridge Design Specifications, 3rd Edition, Washington, D.C. USA.
3. Wind-induced vibration of a traffic-signal-support structure with cantilevered tapered circular mast arm;Zuo;Eng. Struct.,2010
4. Fatigue resistant design of cantilevered signal, sign and light supports;Dexter,2002
5. Fatigue evaluation of two variable message sign structures;Weston,2004