Abstract: A traffic signal control which is designed for color-blind persons, and has a unique geometric shape for the information to be conveyed. The traffic signal control has a central illuminated region of the specific geometric shape, bordered by an opaque region about which is provided a translucent track of white-light of the same geometric shape, which in turn is surrounded by another opaque strip of the same shape. When the control is for a "stop" signal, the central region is made of a red filter, and for the "go", it is made of a green filter. The white light is of a greater intensity than the light emanating from the central region, so that the color blind person may recognize the particular geometric shape indicative of that signal.