A post assembly with illuminated information includes a hollow tube extending upwardly from a ground surface, the tube having a sidewall with textual or graphical information cut therethrough. A lighting assembly is disposed within the hollow tube, and a transparent or translucent sleeve positioned over the tube such that when the lighting assembly is activated, the textual or graphical information is visible through the transparent or translucent sleeve. The lighting assembly may include a flashing light. In the preferred embodiment the hollow tube is metal, and the transparent or translucent sleeve is constructed of plastic. The lighting assembly preferably comprises one or more fluorescent tubes. The textual or graphical information may be traffic-related, or it may concern other directives. The post preferably has a circular cross-section in the range of 2 to 10 inches, and an optional base may be provided for mounting to a ground surface.