347.26(4)(b)(b) No lighted back-up lamp shall be displayed on any vehicle upon a highway except when such vehicle is about to be or is being driven backward. Whenever a back-up lamp is lighted during hours of darkness, the tail lamp or tail lamps on the vehicle displaying such lighted back-up lamp also shall be lighted. 347.26(5)(5) Identification lamps on taxicabs and buses. No person shall operate a motor vehicle regularly used for transporting passengers for hire displaying any lighting device for identification purposes other than a single illuminated sign or lighted lamp mounted above the top line of the windshield, colored white, amber or green. Such illuminated sign or lamp shall be so constructed as to emit a steady or flashing nonglaring light. 347.26(6)(6) Warning lamps on tow trucks and service vehicles. 347.26(6)(a)(a) Any vehicle which by reason of its use upon a highway creates a vehicular traffic hazard requiring the exercise of unusual care in approaching, overtaking or passing shall be equipped with a flashing or rotating amber lamp of the dome type at the highest practicable point, visible from a distance of 500 feet, or 2 flashing amber lamps, one showing to the front and one showing to the rear, visible from a distance of 500 feet and mounted approximately midway between the extremities of the width of the vehicle and at the highest practicable point. Such amber lamp or lamps shall be lighted when such vehicle is moving a disabled vehicle along or upon a public highway at a speed below the average speed of motor vehicle traffic on such street or highway and may not be lit at other times. 347.26(6)(b)(b) Operators of tow trucks or towing vehicles shall equip each tow truck or towing vehicle with a flashing or rotating red lamp, in addition to flashing type amber lamps. Such lamp shall be placed on the dome of the vehicle at the highest practicable point visible from a distance of 500 feet. This flashing red lamp shall be used only when such vehicle is standing on or near the traveled portion of a highway preparatory to towing or servicing the disabled vehicle. 347.26(7)(7) Warning lamps on certain highway vehicles. Any vehicle of the department or a county or municipal highway department that by reason of its use upon a highway creates a vehicular traffic hazard requiring the exercise of unusual care in approaching, overtaking, or passing may be equipped with any of the following configurations of flashing red, amber, or green lamps: 347.26(7)(b)(b) Two lamps, one showing to the front and one showing to the rear. The lamps shall be mounted approximately midway between the extremities of the width of the vehicle and at the highest practicable point and shall be used only for the purpose of warning operators of other vehicles of the presence of the traffic hazard. 347.26(7)(c)(c) Four lamps, 2 showing to the front and 2 showing to the rear. The lamps showing to the front shall be mounted at the same level and as widely spaced laterally as practicable. The lamps showing to the rear shall be mounted at the same level and as widely spaced laterally as practicable. 347.26(8)(8) Warning lamps for mail delivery vehicles. Any vehicle used for mail delivery may be equipped with a flashing amber lamp or strobe light mounted at the highest practicable point and showing to the front and rear that may be used only to warn other motorists of the presence of a vehicular traffic hazard requiring the exercise of unusual care in approaching, overtaking or passing when the vehicle is being used to deliver mail. 347.26(9)(9) Warning lamps on public utility and cooperative vehicles. 347.26(9)(a)(a) Subject to par. (b), any vehicle of a public utility, as defined in s. 196.01 (5), telecommunications carrier, as defined in s. 196.01 (8m), or cooperative association organized under ch. 185 for the purpose of producing or furnishing heat, light, power, or water to its members that by reason of its use upon a highway creates a vehicular traffic hazard requiring the exercise of unusual care in approaching, overtaking, or passing may be equipped with any of the following configurations of flashing amber or green lamps: 347.26(9)(a)2.2. Two lamps, one showing to the front and one showing to the rear. The lamps shall be mounted approximately midway between the extremities of the width of the vehicle and at the highest practicable point and shall be used only for the purpose of warning operators of other vehicles of the presence of the traffic hazard. If the mounting of lamps midway between the extremities of the width of the vehicle is impracticable because of the vehicle’s design, then the mountings shall be made at or near the upper left front and rear corners of the vehicle. 347.26(9)(a)3.3. Four lamps, 2 showing to the front and 2 showing to the rear. The lamps showing to the front shall be mounted at the same level and as widely spaced laterally as practicable. The lamps showing to the rear shall be mounted at the same level and as widely spaced laterally as practicable. 347.26(9)(b)(b) In this paragraph, “maintenance and restoration of utility service” means the immediate restoration of a utility service that is outside the normal parameters of general maintenance or construction when damage or interruption of service has been caused to utility infrastructure by adverse weather or other events and that requires utility crews to park utility vehicles in the roadway or on the shoulder of the roadway. No person may use flashing green lamps under par. (a) unless the vehicle upon which the lamps are mounted is operated for the purpose of maintenance and restoration of utility service. 347.26(10)(10) Flashing amber light on oversize vehicle. Any vehicle moving on the highway pursuant to an oversize permit issued under s. 348.25, 348.26 or 348.27 may be equipped with a flashing amber dome light upon the cab of such vehicle or with double faced flashing amber light mounted along the sides of such vehicle mounted and used when the movement is oversize. 347.26(11)(a)(a) Any vehicle may be equipped with lamps which may be used for the purpose of warning the operators of other vehicles of the presence of a vehicular traffic hazard requiring the exercise of unusual care in approaching, overtaking or passing, and when so equipped may display such warning in addition to any other warning signals required by this section. The lamps used to display such warning to the front shall be mounted at the same level and as widely spaced laterally as practicable, and shall display simultaneously flashing white or amber lights, or any shade of color between white and amber. The lamps used to display such warning to the rear shall be mounted at the same level and as widely spaced laterally as practicable, and shall show simultaneously flashing amber or red lights, or any shade of color between amber and red. These warning lights shall be visible from a distance of not less than 500 feet under normal atmospheric conditions at night. Directional signals meeting the requirements of this chapter shall be used or lamps meeting these requirements, mounted so as to comply with turn signal installation. 347.26(11)(am)(am) In addition to any other lamps authorized under this subsection, a motor truck having a gross vehicle weight rating of more than 26,000 pounds may be equipped with a 360-degree flashing or rotating amber light mounted at the highest practicable point. The flashing or rotating amber lamp may be lighted only when the motor truck is upon a highway having a maximum speed limit of more than 35 miles per hour and the motor truck is traveling 10 or more miles per hour below the maximum speed limit, is stopped, or is backing on such highway. The flashing or rotating amber lamp may not be lit at other times. 347.26(11)(b)(b) Whenever any vehicle other than an automobile, which is equipped as permitted in par. (a), is stopped for more than 10 minutes on the traveled portion of any highway, or shoulder thereof, during hours of darkness, the driver of such vehicle shall display warning signals as required by s. 347.29. 347.27347.27 When lighted lamps required on parked vehicles. 347.27(1)(1) No person shall park or leave a vehicle standing, whether attended or unattended, upon a roadway or the shoulder immediately adjacent thereto during hours of darkness unless: 347.27(1)(a)(a) Such vehicle is parked or standing where there is sufficient artificial light to render it visible from a distance of 500 feet or is lawfully parked within the corporate limits of a city or village and in either case is equipped with at least one red reflector mounted on the rear thereof as near as practicable to the side of the vehicle which is closest to passing traffic and otherwise meeting the mounting and visibility requirements specified in ss. 347.18 and 347.19; or 347.27(1)(b)(b) Such vehicle displays one or more lighted lamps meeting the following requirements: 347.27(1)(b)1.1. At least one lamp shall display a white or amber light visible from a distance of 500 feet to the front of the vehicle, and the same lamp or at least one other lamp shall display a red light visible from a distance of 500 feet to the rear of the vehicle. 347.27(1)(b)2.2. The location of such lamp or lamps shall always be such that at least one lamp or combination of lamps meeting the requirements of this section is installed as near as practicable to the side of the vehicle which is closest to passing traffic. 347.27(1)(b)3.3. If the vehicle is equipped with 2 parking lamps and 2 tail lamps, both parking lamps and both tail lamps shall be lighted. 347.27(2)(2) Any lighted headlamps on a vehicle parked on a highway shall be depressed or dimmed. 347.27(3)(3) In this section, “vehicle” includes farm tractors, implements of husbandry, animal-drawn vehicles, lightweight utility vehicles as defined in s. 346.94 (21) (a) 2., and road machinery. 347.27 HistoryHistory: 2009 a. 157; 2015 a. 232. 347.28347.28 Certain vehicles to carry flares or other warning devices. 347.28(1)(1) No person shall operate a motor truck or motor bus more than 80 inches in width or a truck tractor or road tractor on any highway outside the corporate limits of a city or village during hours of darkness unless such vehicle carries in a place readily accessible to the driver the following warning devices: 347.28(1)(a)(a) At least 3 pot torches or 3 red electric lanterns or 3 red emergency reflectors, each of which shall be capable of being seen and distinguished at a distance of at least 600 feet under normal atmospheric conditions during hours of darkness. If pot torches are carried in lieu of red electric lanterns, at least 3 red-burning fusees shall be carried in addition to such pot torches; and 347.28(1)(b)(b) At least 2 red-cloth flags, not less than 12 inches square, with standards to support such flags. 347.28(2)(2) No person shall operate upon a highway outside the corporate limits of a city or village during hours of darkness any motor vehicle used for the transportation of explosives or any cargo tank truck used for the transportation of flammable liquids or compressed gases unless there is carried in such vehicle 3 red electric lanterns or 3 red emergency reflectors meeting the requirements of sub. (1). No pot torch or fusee or signal produced by flame shall be carried in any such vehicle. Such red emergency reflectors shall comply with the specifications for such reflectors as set forth in interstate commerce commission motor carrier safety regulations. 347.29347.29 Display of warning devices for certain vehicles when standing on highway. 347.29(1)(1) Except as provided in s. 347.26 (11) (b), whenever any motor truck, motor bus, trailer or semitrailer more than 80 inches in width or truck tractor or road tractor is left standing, whether attended or unattended, during hours of darkness upon the traveled portion of any highway or the shoulder adjacent thereto outside the corporate limits of a city or village, the operator of such vehicle shall display the following warning devices upon the highway during the entire time the vehicle is so left standing and such devices shall be placed in the following order: 347.29(1)(a)(a) A lighted fusee or lighted red electric lantern or a red emergency reflector shall immediately be placed at the traffic side of the vehicle in the direction of the nearest approaching traffic. If a lighted fusee was so placed, the driver shall replace such fusee with a lighted pot torch or lighted red electric lantern or a red emergency reflector after the driver has placed the warning devices specified in pars. (b) and (c) and before the fusee burns out. 347.29(1)(b)(b) A lighted pot torch or lighted red electric lantern or a red emergency reflector shall be placed approximately 100 feet from the standing vehicle in the center of the lane occupied by such vehicle and toward traffic approaching in that lane. 347.29(1)(c)(c) One lighted pot torch or lighted red electric lantern or a red emergency reflector shall be placed approximately 100 feet from the standing vehicle in the center of the lane occupied by such vehicle and in the opposite direction from the warning device placed in accordance with par. (b). 347.29(2)(2) Whenever any vehicle referred to in this section is left standing, whether attended or unattended, within 500 feet of a curve, hillcrest or other obstruction to view, the warning signal in that direction shall be so placed as to afford ample warning to other users of the highway, but in no case less than 100 feet nor more than 500 feet from the standing vehicle. 347.29(3)(3) Whenever any vehicle of a type referred to in this section is left standing, whether attended or unattended, upon any roadway of a divided highway during hours of darkness, the appropriate warning devices prescribed in subs. (1) and (4) shall be placed as follows: 347.29(3)(a)(a) One shall be placed at a distance of approximately 200 feet from the vehicle in the center of the lane occupied by the standing vehicle and in the direction of traffic approaching in that lane; 347.29(3)(b)(b) One shall be placed at a distance of approximately 100 feet from the vehicle in the center of the lane occupied by the vehicle and in the direction of traffic approaching in that lane; 347.29(3)(c)(c) One shall be placed at the traffic side of the vehicle and approximately 10 feet from the vehicle in the direction of the nearest approaching traffic. 347.29(4)(4) No operator of a motor vehicle used in the transportation of explosives, or of a cargo tank truck used for the transportation of any flammable liquid or compressed flammable gas shall use any flame-producing emergency signal for protecting any such vehicle. In lieu thereof, red electric lanterns or red emergency reflectors shall be used, the placement of which shall be in the same order and manner as prescribed in subs. (1) to (3). 347.29(5)(5) Whenever any vehicle of a type referred to in this section is left standing at any place mentioned in this section at times other than during hours of darkness, the operator of the vehicle shall display 2 red flags upon the roadway in the lane of traffic occupied by the standing vehicle, one at a distance of approximately 100 feet in advance of the vehicle and one at a distance of approximately 100 feet to the rear of the vehicle. 347.29(6)(6) The flares, fusees, red electric lanterns, red emergency reflectors and flags to be displayed as required in this section shall conform with the requirements of s. 347.28. 347.29(7)(7) This section does not apply to vehicles standing on a highway in compliance with traffic regulations or the directions of a traffic officer or official traffic sign or signal. 347.29 HistoryHistory: 1991 a. 316. 347.29 AnnotationA flag warning under sub. (5) is not applicable in a city. Northland Insurance Co. v. Avis Rent-A-Car, 62 Wis. 2d 643, 215 N.W.2d 439 (1974). 347.30347.30 Penalty for violating lighting equipment requirements. 347.30(1)(1) Any person violating s. 347.06 or 347.13 (2), (3) or (4) may be required to forfeit not less than $10 nor more than $20 for the first offense and not less than $25 nor more than $50 for the 2nd or subsequent conviction within a year. 347.30(3)(3) Notwithstanding sub. (2), on or after April 5, 2018, and before 6 months after April 5, 2018, if a person violates s. 347.24 (2) by operating on a highway during hours of darkness a vehicle that is drawn by an animal and that is not equipped with 2 yellow or amber strobe lights visible from a distance of 500 feet to the rear and mounted not more than 6 inches from the lateral extremities of the vehicle, a law enforcement officer shall issue the person a warning notice and may not issue a citation. 347.30 HistoryHistory: 1971 c. 278; 2017 a. 228. OTHER EQUIPMENT
347.35(1)(1) Motor vehicles. No person shall operate any motor vehicle, other than a moped or motorcycle, upon a highway unless such motor vehicle is equipped with brakes adequate to control the movement of and to stop and hold such vehicle and capable of meeting the performance specifications under s. 347.36. There shall be 2 separate means of applying the brakes, each of which means shall be effective to apply the brakes to at least 2 wheels. 347.35(1a)(1a) Parking brakes. Every such vehicle and combination of vehicles, except mopeds and motorcycles, shall be equipped with parking brakes adequate to hold the vehicle on any grade on which it is operated, under all conditions of loading on a surface free from snow, ice or loose material. The parking brakes shall be capable of being applied by the driver’s muscular effort or by spring action or by equivalent means. Their operation may be assisted by the service brakes or other source of power provided that failure of the service brake actuation system or other power assisting mechanism will not prevent the parking brakes from being applied. The parking brakes shall be so designed that when once applied they shall remain applied with the required effectiveness despite exhaustion of any source of energy or leakage of any kind. The same brake drums, brake shoes and lining assemblies, brake shoe anchors and mechanical brake shoe actuation mechanism normally associated with the wheel brake assemblies may be used for both the service brakes and the parking brakes. If the means of applying the parking brakes and the service brakes are connected in any way, they shall be so constructed that failure of any one part shall not leave the vehicle without operative brakes. 347.35(2)(2) Mopeds and motorcycles. No person may operate a moped or motorcycle upon a highway unless the moped or motorcycle is equipped with at least one brake capable of meeting the performance specifications set forth in s. 347.36. The brake may be designed to be operated either by hand or by foot. 347.35(3)(3) Trailers, semitrailers and towed vehicles. 347.35(3)(a)(a) Except as provided in par. (am), no person shall operate on a highway any trailer, semitrailer or other towed vehicle having a gross weight of 3,000 pounds or more and manufactured after January 1, 1942 unless such vehicle is equipped with brakes adequate to control the movement of and to stop and hold it. 347.35(3)(am)(am) A motor vehicle may be towed without being equipped with brakes as provided in par. (a) if the gross weight of the towed vehicle is not more than 40 percent of the gross weight of the towing vehicle and the brakes on the towing vehicle are capable of bringing the combination of towing vehicle and towed vehicle to a stop as provided in s. 347.36 (1). 347.35(3)(b)(b) Every full trailer, semitrailer, pole trailer or other towed vehicle required to be equipped with brakes shall be equipped with brake systems of such design and type, and capable of meeting such performance standards, as established by rule of the department. 347.35(3)(c)(c) This subsection does not apply to farm trailers or to disabled vehicles while being towed to a place of repair or to automobiles or trucks while being towed or being transported pursuant to s. 341.47 (1) (b). 347.35(4)(4) Mobile homes and recreational vehicles. No person shall manufacture and no person shall sell a mobile home or recreational vehicle in this state unless such mobile home or recreational vehicle is equipped with brakes adequate to control the movement of and to stop and hold it. No person shall operate on a highway any mobile home registered as a 1940 or later year model or recreational vehicle unless such mobile home or recreational vehicle is equipped with brakes adequate to control the movement of and to stop and hold it. 347.35(5)(a)(a) No person may operate on a highway any self-propelled implement of husbandry manufactured after February 1, 1985, unless the vehicle is equipped with brakes or other stopping device adequate to control the movement of and to stop and hold the implement of husbandry. 347.35(5)(b)(b) Every self-propelled implement of husbandry required to be equipped with brakes or other stopping device shall be equipped with brakes or a stopping device that meets design, type or performance standards established by the department by rule. The rule of the department under this paragraph shall comply with the applicable standard established by the American society of agricultural engineers. 347.36347.36 Performance ability of brakes. 347.36(1)(1) Brakes on motor vehicles and brakes on combinations of vehicles shall be capable of bringing the vehicle or combination of vehicles to a stop, under normal conditions, within 50 feet when traveling at a speed of 20 miles per hour. 347.36(3)(3) All required brakes shall be maintained in good working order. 347.36 HistoryHistory: 1983 a. 243. 347.36 Cross-referenceCross-reference: See also ss. Trans 305.17 and 305.37, Wis. adm. code. 347.37347.37 Brake fluid, sale regulation. 347.37(1)(1) After January 1, 1960, no hydraulic brake fluid for use in motor vehicles shall be sold in this state if such brake fluid is below the minimum standard of specifications established by the society of automotive engineers for heavy duty type brake fluid No. 70R1 or a later designator for an improved product. 347.37(2)(2) All manufacturers of brake fluids selling such fluids in Wisconsin shall state on the immediate containers in which such fluid is packaged that the fluid therein meets or exceeds the specifications under sub. (1). 347.38347.38 Horns and warning devices. 347.38(1)(1) No person shall operate a motor vehicle upon a highway unless such motor vehicle is equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no person shall at any time use a horn otherwise than as a reasonable warning or make any unnecessary or unreasonably loud or harsh sound by means of a horn or other warning device. 347.38(2)(2) Except as otherwise provided in this section, no vehicle shall be equipped with nor shall any person use upon a vehicle any siren or compression or exhaust whistle. 347.38(3)(3) Any vehicle may be equipped with a theft alarm signal device if such device is so arranged that it cannot be used by the driver as an ordinary warning signal. 347.38(4)(4) An authorized emergency vehicle shall be equipped with a siren, but such siren shall not be used except when such vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, when responding to but not upon returning from a fire alarm, when transporting an organ for human transplantation, or when transporting medical personnel for the purpose of performing human organ harvesting or transplantation immediately after the transportation, in which events the driver of such vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers.
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Chs. 340-351, Vehicles
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