The lighted road cone has a base and an elongate hollow pyramidal body having a plurality of faces extending upward from the base. A column of lights is disposed on each face of the pyramidal body, the lights extending from proximate the base upward to proximate a top portion of the hollow body. A controller turns the lights on and off. Preferably, each column has a pair of red lights near the base of the device, an intermediate pair of blue lights disposed upward from the red lights, and then a pair of red lights disposed upward from the blue lights. A top dome light may be disposed on the top of the hollow body. The lights may be prismatic in shape. Alternatively, the lights may be arranged in polygonal layers that circumscribe the pyramidal body.