This is a forum for all things associated with traffic control devices.  As a member you will find lots of information regarding how this equipment works, how does a city or town decide that a signalized intersection is needed.  You'll learn of the history and evolution of the traffic light dating back to the railroad days, to Charles Adler Jr's. "actuated" traffic light, and to the modern day traffic light.

You can also learn why the colors for the modern traffic light were chosen, how M.U.T.C.D. (the Manual for uniform traffic control devices) was created, and how N.E.M.A. (the Nation Electrical and Manufacturers Association was formed.

Members of this profession are always welcome to share insight and experience with the members of Traffic Light Central.  Click on the Traffic Light Central banner to join up.