LED traffic signal lamps last longer, save money in Hampton Roads cities

Not long ago, if you opened the red, yellow or green lens of a traffic signal light in Newport News or Hampton, you would find a 135-watt incandescent bulb, like one you might use at home, set in a bowl-shaped reflector. But for at least three years the signal lights in all 287 Newport News intersections have used LED units, and Hampton just finished switching over to LED units for its 187 intersections