A traffic light enhancement device for a traffic light comprises a light bulb having a color which is present in the traffic light for installation at the traffic light to replace an existing lightbulb of corresponding color in the traffic light. A processor is provided and associated with the lightbulb for measuring the duration for which the color is illuminated in the normal operation of the traffic light. A lightbulb display is provided in the light bulb for displaying the color based on processor measurements in changing configurations according to remaining duration for which the color is illuminated.