Thurman Scales Traffic Light accessories can be configured for one- or two-way traffic. These lights provide highly visible, incandescent light projection. The enclosures are an exceptional grade die cast from aluminum alloy which includes a corrosion resistant finish and are designed for quick and easy pole mounting. Thurman Traffic Signals are designed for low maintenance and increased durability. All exterior surfaces of the housing, door, visors and back plates are cleaned and powder coated to the highest industry standards providing exceptional resistance to impact and weather.