Western Australian Repealed Regulations

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This legislation has been repealed.

ROAD TRAFFIC (VEHICLE STANDARDS) REGULATIONS 1977 - REG 601

601 .         Brakes

        (1)         Subject to the provisions of subregulation (2) a motor vehicle, other than a motor cycle, shall be equipped with an efficient braking system comprising brakes fitted to all road wheels, either with 2 separate methods of actuation, or with a separate emergency hand-brake system, so arranged, in both cases, that the emergency hand-brake is capable of acting on at least 2 wheels or wheel assemblies, and that, in the event of failure of any one part of the actuating mechanism, effective braking remains on not less than 2 wheels or wheel assemblies.

        (2)         Notwithstanding the provisions of subregulation (1), where a vehicle complies with the performance requirements of regulation 604, then — 

            (a)         if it was first registered before 1 January 1930 it may have 2 independent, efficient braking systems, each of which acts on not less than half the number of road wheels or wheel assemblies, or, where the vehicle has less than 4 wheels or wheel assemblies, acts on 2 wheels or wheel assemblies; and

            (b)         if the vehicle is a tractor, grader or other self-propelled mobile plant incapable of exceeding 40 kilometres per hour and is equipped with one efficient wholly mechanical braking system, acting on at least 2 wheels or wheel assemblies, and the actuating mechanism has a ratchet or locking device capable of holding it in any selected position, it complies with the requirements of this regulation.

        (3)         The brake tubing, brake hose, brake cables, rods and other linkage shall, in every case — 

            (a)         be so constructed as to ensure adequate, reliable and continued functioning;

            (b)         be so fitted to the vehicle as to prevent chafing, kinking, or other mechanical damage, under normal motion of the parts to which they are attached; and

            (c)         in the case of brake tubing and brake hose, conform to the British Standards Specification of the Society of Automotive Engineers or such other standards specified for hydraulic brake hose, air brake hose or vacuum brake hose as the Director General may approve.

        (4)         Notwithstanding the provisions of subregulation (3), all motor vehicles manufactured on or after 1 January 1970 that are equipped with hydraulic brake hoses shall be so equipped with hydraulic brake hose that complies with Australian Design Rule No. 7 — Hydraulic Brake Hoses.

        (5)         A braking system shall be so constructed that — 

            (a)         the service foot-brake acts directly on the road wheels and not through the transmission;

            (b)         the emergency hand-brake is operated by a separate lever fitted with a ratchet or locking device capable of holding it in any selected position, and is applied by direct mechanical action without the intervention of any hydraulic, electrical or pneumatic device; and

            (c)         both braking systems described in paragraphs (a) and (b) are so arranged that, when either system is operated, the brakes are equally applied to all the wheels of an axle.

        (6)         A braking system shall be so constructed that provision is made for the adjustment or taking up of the ordinary wear of the brakes and for adequately securing or locking the adjustment device over the whole of its effective range.

        (7)         Subject to the provisions of subregulations (11), (12) and (13), where a motor vehicle is fitted — 

            (a)         with an air operated braking system, it shall be equipped with at least one air storage reservoir; or

            (b)         with a vacuum operated braking system, it shall be equipped with at least one vacuum storage reservoir.

        (8)         Subject to the provisions of subregulations (11), (12) and (13) a motor vehicle, of which the aggregate mass is 6 tonnes or more, and an omnibus, shall, if fitted with air assisted or vacuum assisted braking system, be equipped with not less than one storage reservoir for air or vacuum, as the case may require.

        (9)         The storage reservoir with which the motor vehicle is equipped in accordance with subregulations (7) and (8) shall — 

            (a)         be of adequate size and capacity to ensure that, in the event of the engine stopping or the source of supply of air or vacuum failing, not less than 2 applications of the service brake, each complying with the brake performance requirement prescribed by regulation 604, can be made;

            (b)         be of adequate strength and, in the case of an air reservoir, be provided with a drain, plug or other means to permit the removal of water or other foreign matter that may accumulate, at the lowest point of the reservoir;

            (c)         be provided with such a visible or audible warning signal or both as will readily indicate to the driver, while in his proper driving position, any loss or lack of air or vacuum sufficient to prevent the vehicle from being stopped in the distance prescribed by regulation 604; and a gauge indicating pressure or vacuum within the reservoir does not satisfy the requirements of this paragraph; and

            (d)         be safeguarded by a check valve or equivalent device such as will, in the event of failure or leakage in its connection to the source of compressed air or vacuum, ensure that the air or vacuum supply in the reservoir is not depleted by the failure or leakage.

        (10)         Subject to the provisions of subregulations (12) and (13), a motor vehicle used to tow a trailer, semi-trailer or pole-type trailer required to be equipped with brakes, shall be equipped with means of providing that, in case of a breakaway of the tow, the service brakes of the motor vehicle remain operative and capable of stopping the motor vehicle, in the distance prescribed by regulation 604.

        (11)         On and after 1 January 1967 the requirements — 

            (a)         of subregulations (7), (8) and (9) shall apply to omnibuses; and

            (b)         of subregulations (7), (8), (9) and (10) shall apply to every motor vehicle of which the aggregate mass is 6 tonnes or more and which is — 

                  (i)         first registered on or after that date; and

                  (ii)         first fitted with air or vacuum operated or air or vacuum assisted brakes on or after this date.

        (12)         Notwithstanding the provisions of subregulation (5), emergency brakes applied by spring action, after the release of air pressure or vacuum holding them off, may be fitted to a motor vehicle, and, in that event — 

            (a)         the brakes shall be so fitted and arranged that they will act directly on, and be applied equally to, all the wheels of any axle on which they are used;

            (b)         the lever or control by which the brakes are made to apply shall be fitted with a device that will lock the lever or control against inadvertent operation and shall be so located as to enable the driver to apply or release the brakes from the normal driving position;

            (c)         the brakes, when not deliberately brought into use, shall be held off by the normal air or vacuum supply in the vehicle and shall be applied by the near instantaneous discharge of the air or vacuum by which they are held off, through the operation of the lever or control mentioned in paragraph (b) of this subregulation;

            (d)         a separate air or vacuum reservoir, complying with the provisions of subregulation (9)(b) and (d), to provide at least 2 releases of the spring brakes when the normal air or vacuum supply is not available, shall be provided, together with a lever or control so located as to enable the driver to release and apply the brakes from the normal driving position;

            (e)         the brakes shall not operate, automatically, on loss of stored air or vacuum supply, before the pressure or vacuum in the system has fallen below the level at which the low level warning signal operates;

            (f)         where the brakes are fitted to a motor vehicle used to tow a trailer, semi-trailer or pole-type trailer, they shall not operate, automatically, before the breakaway brakes operate, and their application shall not cause the normal brakes of the trailer, semi-trailer or pole-type trailer to operate; and

            (g)         the brakes shall be capable of stopping the vehicle in the distances specified in Table B to regulation 604.

        (13)         On and after 1 July 1967 the requirements of subregulations (7), (8), (9) and (10) shall, where relevant, apply to every motor vehicle.

        [Regulation 601 amended in Gazette 2 Feb 1982 p. 407; 31 Jan 1997 p. 685-6.]



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