Section Trans 255.10 - Equipment requirements(1) LIGHTING. An oversize vehicle, or a vehicle with an oversize load operating during the hours of darkness, shall be equipped with the following additional lamps: (a) For a vehicle with a load which extends beyond the width of the vehicle: 1. At the outermost extremity of the foremost edge of the projecting load, an amber lamp visible from the front and side.2. At the outermost extremity at the rearmost edge of the projecting load, a red lamp visible from the rear and side.3. Any portion of an overwidth load extending beyond the width of the foremost or rearmost edge of the vehicle or load shall be marked with an amber lamp visible from the front, both sides, and rear.4. If the overwidth portion of a load measures 3 feet or less from front to rear, that portion shall be marked with an amber lamp visible from the front, both sides and rear, except that if the overwidth projection is located at or near the rear it shall be marked by a red lamp visible from front, side and rear.(b) For a vehicle with a load which extends more than 4 feet beyond the rear of the vehicle: 1. On each side of the projecting load, one red lamp, visible from the side, located so as to indicate maximum overhang.2. On the rear of the projecting load, 2 red lamps, visible from the rear, one at each side; and 2 red reflectors visible from the rear, one at each side, located so as to indicate maximum width.(c) All required lamps shall be illuminated whenever a vehicle is operated during hours of darkness. All lamps shall be visible at a distance of 500 feet.(2) WARNING LAMPS. When required by a permit, warning lamps shall be operated as follows: (a) All amber flashing or revolving warning lamps shall have a reflector at least 6 inches in diameter and shall be bright enough to be clearly visible and attention-attracting at a distance of 500 feet under all conditions when the load is on the highway, except when visibility is obstructed by a hillcrest, a curve, or an object such as another vehicle.(b) All warning lamps shall flash at a rate of 30 to 90 times per minute.(c) Strobe lamps may be used in lieu of flashing or revolving lamps.(d) Warning lamps may not be operated when a vehicle is not operating under the permit.(3) FLAGS. (a) When a vehicle, load, or vehicle and load is overlength, a single flag shall be fastened at the extreme rear of the load if the overlength or projecting portion is 2 feet wide or less.(b) When a vehicle, load, or vehicle and load is overlength, 2 flags shall be fastened at the rear of the load to indicate maximum width if the overlength or projecting portion is wider than 2 feet.(c) When a vehicle, load, or vehicle and load is overwidth, a flag shall be fastened at each front and rear corner of the load. In addition, if any part of the load is more than 4 inches wider than the width of load or vehicle at the front or rear, then a flag shall be placed at the widest point of the load.(d) Each flag shall be solid red or orange in color, and not less than 18 inches square.(e) In order to wave freely, flags shall be securely fastened by at least one corner or securely mounted on a staff.(4) SIGNS. (a) When a vehicle, load, or vehicle and load is more than 10 feet wide or is overlength, 2 warning signs shall be displayed. One sign shall be fastened at the front of the power unit and the other at either the rear of the towed unit or at the rear of the load.(b) Each sign shall state, in black letters on a yellow background, "OVERSIZE LOAD," and may not be less than 7 feet long and 18 inches high. The letters of the sign may not be less than 10 inches high with a brush stroke of not less than 1.4 inches.(c) The sign message may not be displayed when the vehicle is not operating under the permit.(5) HAZARD MARKERS. (a) When required by the conditions of a permit, black and white or black and yellow diagonally striped reflectorized hazard markers, not less than 12 inches wide by 36 inches high, shall be fastened to, or in front of and behind the load, so as to be fully visible to traffic approaching from both the front and rear of the vehicle.(b) All hazard markers shall be located at right angles to the centerline of the vehicle so as to indicate the widest part of the load on each side of the vehicle.Wis. Admin. Code Department of Transportation Trans 255.10
Cr. Register, December, 1990, No. 420, eff. 1-1-91.