One amber revolving light shall be located on top of the towing vehicle. The revolving warning lamp shall be at least six but no more than nine inches in diameter. The lamp shall consist of a lamp with an amber lens and not an uncolored lens with an amber bulb. No inscription shall appear across the face of the lens. Such lamp shall not be of a spotlight type, nor be equipped with a magnifying lens. Such lamp shall be of such design and construction as will provide a visible signal, under normal conditions, from a point at least 1,000 feet distance. Whenever the rear running lights, stop lights, turn signals, or hazard warning lights are obstructed by the load on a vehicle, lighting equipment shall be displayed on the rear of the load equivalent to the obstructed lights or signals.

Warning lights for escort vehicles shall be located on the roof of the vehicle perpendicular to the length of the escort vehicle. The warning light shall be a minimum of 43 inches and a maximum of 52 inches long, a minimum of 10 inches and a maximum of 13 inches wide and a minimum of four inches with a maximum of eight inches high, consists of flashing or strobe lights. Each warning light bar shall consist of a minimum of four lights. If flashing lights are used they shall consist of at least 2 - 95 and 2 - 150 minimum FPM rotators, mirrors shall be placed diagonally between lights (mirrors to be reflective on both sides). All lights shall be visible on a 360 degree basis from the vehicle for a distance of 1,000 feet and arranged with at least two lights in each end of the bar light. The dome cover color shall be amber.

Two warning lamps shall be located on the roof of the vehicle spaced a minimum of three feet six inches apart perpendicular to the side of the vehicle and shall be amber and lighted and steady burning, revolving or flashing. Each such lamp shall have a lens not less than six nor more than nine inches diameter. Each such lamp shall consist of a lamp with an amber lens and not an uncolored lens with an amber bulb. No inscriptions shall appear across the face of the lens. Lamps shall not have a light greater than 50 candlepower. Such lamps shall not be of a spotlight type, nor be equipped with a magnifying lens. Each such lamp shall be of such design and construction as will provide a visible signal, under normal conditions from a point at least 500 feet distance.