6-1-8: VEHICLE EQUIPMENT:
   A.   Motor Vehicles:
      1.   Brakes: Every motor vehicle, except motorcycles driven or operated upon any street, alley, highway or bridge within the city, shall be provided with two (2) sets of independent brakes in good working order, either one of which sets must be sufficient to stop the drive wheels of the vehicle and prevent them from turning while the vehicle is in motion; provided, however, it shall be unlawful to use compression brakes as an adjuvant or aid to stopping or slowing the motor vehicle if said use of compression brakes shall cause excessive and unusual noise that would be offensive to the senses or exceed the noise decibel on the standard A scale of seventy (70) dBA within fifty feet (50') of the streets and highways whereon such compression brakes are being used. Every motorcycle driven or operated upon any street, alley, highway or bridge in the city must be provided with a brake in good working order sufficient to stop the drive wheel thereof and to prevent it from turning while the vehicle is in motion.
      2.   Horns: Every motor vehicle driven or operated upon any street, alley, highway or bridge within the city shall be equipped with a horn or other device for audible signaling sufficient under all reasonable circumstances and conditions to give timely warning of the approach of such motor vehicle. (Ord. 91-1, 2-1-1991)
      3.   Tires: It is unlawful for any person to drive, move or operate upon any of the streets of the city any tractor, truck, caterpillar tractor or other vehicle, the bull or drive wheels of which are equipped with blades, cleats or lugs of such a nature as to cut up and destroy the surface of the streets unless such tractor, truck, caterpillar tractor or other vehicle has the bull or drive wheels thereof blocked or otherwise covered so that the blades, cleats or lugs will not cut up or destroy the surface of the streets. (Ord. A-85, 12-5-1955)
   B.   Trailers: No trailer shall be towed upon any street, alley, highway or bridge within the city which is not equipped with safety chains or hitch, approved by the supervisor or assistant supervisor of the Montana highway patrol, and which trailer does not carry a taillight or approved reflector, and which trailer is not so constructed as to operate without wobbling. (Ord. 198, 10-18-1926)