Montana Code 61-9-310. Reservoir capacity and check valve
61-9-310. Reservoir capacity and check valve. (1) A bus, truck, or truck tractor with air operated brakes must be equipped with at least one reservoir sufficient to ensure that, when fully charged to the maximum pressure as regulated by the air compressor governor cutout setting, a full service brake application is made without lowering the reservoir pressure by more than 20%. Each reservoir must be provided with means for readily draining accumulated oil or water.
Terms Used In Montana Code 61-9-310
- Bus: means a motor vehicle designed for carrying more than 10 passengers and used for the transportation of persons and any other motor vehicle, other than a taxicab, designed and used for the transportation of persons for compensation. See Montana Code 61-1-101
- Motor vehicle: means :
(i)a vehicle propelled by its own power and designed or used to transport persons or property on the highways of the state;
(ii)a quadricycle if it is equipped for use on the highways as prescribed in chapter 9; or
(iii)a golf cart only if it is equipped for use on the highways as prescribed in chapter 9 and is operated pursuant to 61-8-391 or by a person with a low-speed restricted driver's license. See Montana Code 61-1-101
- Pole trailer: means a vehicle without power designed to be drawn by another vehicle and attached to the towing vehicle by means of a reach or pole or by being boomed or otherwise secured to the towing vehicle and ordinarily used for transporting long or irregularly shaped loads such as poles, pipes, or structural members capable generally of sustaining themselves as beams between the supporting connections. See Montana Code 61-1-101
- Semitrailer: means a vehicle, with or without motive power, other than a pole trailer, designed for carrying property and for being drawn by a motor vehicle and constructed so that some part of its weight and that of its load rests on or is carried by another vehicle. See Montana Code 61-1-101
- Trailer: means a vehicle, with or without motive power, other than a pole trailer, designed for carrying property and for being drawn by a motor vehicle and constructed so that no part of its weight rests on the towing vehicle. See Montana Code 61-1-101
- Truck tractor: means a motor vehicle designed and used primarily for drawing other vehicles and not constructed to carry a load other than a part of the weight of the vehicle and load drawn. See Montana Code 61-1-101
- Vehicle: means a device in, on, or by which any person or property may be transported or drawn on a public highway, except devices moved by animal power or used exclusively on stationary rails or tracks. See Montana Code 61-1-101
(2)A truck with three or more axles equipped with vacuum assistor type brakes or a truck tractor and truck used for towing a vehicle equipped with vacuum brakes must be equipped with a reserve capacity or a vacuum reservoir sufficient to ensure that, with the reserve capacity or reservoir fully charged and with the engine stopped, a full service brake application is made without depleting the vacuum supply by more than 40%.
(3)A motor vehicle, trailer, semitrailer, or pole trailer, when equipped with air or vacuum reservoirs or reserve capacity as required by this section, must have reservoirs or reserve capacity safeguarded by a check valve or equivalent device that, in the event of failure or leakage in its connection to the source of compressed air or vacuum, prevents the stored air or vacuum from being depleted by the leak or failure.