REGULATIONS Sch. to Pt. 13, c. 54 71 Present c. 47B (original c. 47A) inserted by regulations published Gazette 18 January 1964, pp. 162-3; re-numbered as c. 47B by regulations published Gazette 24 October 1970, pp. 735-6.
48. ( 1) A trailer shall not be of such weight or dimensions that it will be likely to prevent the driver of a vehicle drawing it from safely controlling it and such vehicle.
(2) A semi-trailer shall be securely joined to the forward portion of an articulated vehicle.
Part III
(4) Any other vehicle where the body of the vehicle is such that mudguards are unnecessary or impracticable.
55. Any mudguard required for a vehicle under this Part shall comply with the following requirements:-
( I) It shall be so constructed and affixed that-
(a) It will, as far as practicable, catch or deflect downwards any stones, mud, water or other substance thrown upwards by the rotation of the wheels;
(b) In the case of a motor vehicle, other than a motor cycle, it will itself, or in conjunction with other components of the vehicle or its body or chassis, prevent direct contact with the upper half of the wheel in a forward collision.
(2) Its width shall be not less than the overall width of the wheel or wheels for which it is provided: Provided that if the motor vehicle has a body of the tray type, the width of which, with any loading or equipment thereon, is 2.2 metres or exceeds 2.2 metres, the width of the mudguard shall be not less than 380 millimetres.
(3) It shall be in good order and condition, and free from any cracks and tears and any sharp or jagged edges.
As amended by regulations published Gazette 22 June 1974, pp. 1116-20; 29 November 1975, pp. 1255-59.
56. In the case of any motor vehicle which with any loading or equipment thereon is 2.2 metres, or exceeds 2.2 metres, in width, and which has a body of the tray type, that portion of the external surface of any mudguard affixed thereto which is visible to the rear of the vehicle shall be white or silver in colour and, in addition, there shall be displayed by painting or other process across the full width of the rearmost portion of the tray, a horizontal band of a uniform depth of at least 75 millimetres and white or silver in colour.
As amended by regulations published Gazette 22 June 1974, pp. 1116-20; 29 November 1975, pp. 1255-59.
Part V
BRAKES
57. All motor vehicles, including the forward portion of an articulated vehicle, except motor cycles, trailers and semi-trailers-
(1)-
(a) One efficient braking system comprising brakes capable of acting directly on all road wheels, with two separate methods of actuation, such brakes being so arranged that, in the event of failure of either method of actuation, there will remain effective braking on not less than two wheels; or (b) Two independent and efficient braking systems, one capable of acting directly
on not less than half the number of road wheels or where the vehicle has less than four wheels, on two wheels.
(2) In the case of a motor vehicle registered for the first time on or after the 1st January, 1934, the service brakes shall not act through the differential.
(3) The emergency brake of any braking system shall be operated by a separate lever fitted with a ratchet or locking device capable of holding such lever in any desired position and such brake shall be applied by direct mechanical action without the intervention of any hydraulic, electrical or pneumatic device.
Provided, however, that notwithstanding the foregoing provisions of this present subclause (3), emergency brakes applied by spring action following upon the release of air pressure or vacuum preventing such brakes from operating (such emergency brake being hereinafter in this proviso called "spring
Sch. to Pt. 13, c. 57 actuated emergency brakes") may be fitted to a motor vehicle. In such case, the following requirements shall apply:-
(a) Spring actuated emergency brakes shall be so fitted and arranged that they will act directly on and be applied equally to every wheel of each axle of the motor vehicle to which they are fitted;
(b) The lever or control by which spring actuated emergency brakes are caused to be applied shall be fitted with a device which will lock such lever or control against inadvertent operation causing such spring actuated emergency brakes to be released and shall be so located as to enable the driver of the motor vehicle to apply or release such spring actuated emergency brakes from the normal driving position;
(c) The spring actuated emergency brakes when not deliberately brought into use shall be prevented from operating by the normal air or vacuum supply of the motor vehicle. They shall be applied by the near instantaneous discharge of the air or vacuum by which they are prevented from operating through the operation of the lever or control specified in paragraph (b) of this proviso;
(d) A separate air or vacuum reservoir complying with the provisions of paragraphs (d) and (e) of subclause (5) of this clause to provide at least two releases of the spring actuated emergency brakes when the normal air or vacuum supply is. not available shall be provided in the motor vehicle together with a lever or control so located as to enable the driver to release and apply the spring actuated emergency brakes from the normal driving position;
(e) The spring actuated emergency brakes shall not be so constructed as to operate automatically on loss of stored air or vacuum supply before the pressure or vacuum in the spring actuated emergency braking system has fallen below the level at which the low level warning signal of such spring actuated emergency braking system operates;
(f) Where spring actuated emergency brakes are fitted to a motor vehicle used to tow a trailer, semi-trailer or pole trailer they shall not operate automatically before the brakes referred to in paragraph (b) of subclause (2) of clause 58, being brakes in the event of a breakaway, nor shall their application cause the application of any other brakes of the trailer, semi-trailer, or pole trailer;
(g) Spring actuated emergency brakes shall be capable of stopping the motor vehicle to which they are fitted in the distances specified in subclause (2) of clause 63 of this Schedule.
(4) When braking is applied to any wheel it shall be applied with equal force to all wheels on the same transverse axis of the vehicle.
(5)-
(a) Every omnibus which is fitted with an air assisted or vacuum assisted braking system and every motor vehicle first registered on and after the 1st January, 1963, the aggregate weight of which is 6.096 3 tonnes or more, which is fitted with such a braking system, shall have a reservoir or reserve capacity for air or vacuum, as the case may be, incorporated in such braking system.
(b) Every motor vehicle which is fitted with an air operated or vacuum operated braking system shall have a reservoir or reserve capacity for air or vacuum, as the case may be, incorporated in such braking system.
(c) The reservoir or reserve capacity required by this subclause (5) shall be of adequate volume to ensure that, if the engine stops, or the source of air or vacuum fails, an application of the service brakes can be made which is capable of stopping the vehicle in accordance with the requirements specified in clauses 62 and 63 of this Schedule.
(d) Reservoirs required under this subclause (5) shall be of adequate strength, and air reservoirs shall be provided with a drain plug or other means to permit removal of water or other foreign matter which may accumulate at the lowest point of the reservoir.
7 4
(e) Any reservoir or reserve capacity required under this subclause (5) shall be so safeguarded by a check valve or equivalent device that, in the event of failure or leakage in its connection to the source of air or vacuum, the air or vacuum reserve shall not be depleted by the failure or leakage.
( 6) Every motor vehicle used to tow a trailer, semi-trailer or pole-trailer required to be equipped with brakes shall be equipped with means whereby in the event of breakaway of the trailer, semi-trailer or pole-trailer, the service brakes of such motor vehicle will remain fully operative and capable of stopping the motor vehicle in accordance with the requirements specified in clauses 62 and 63 of this Schedule.
(7) In the case of a motor vehicle which is a tractor or implement which is not mounted on a conventional motor vehicle chassis, it shall be sufficient for the purposes of this clause if the vehicle is equipped with at least one effective braking system capable of stopping and holding the vehicle.
As amended by regulations published Gazette 27 November 1971, pp. 1475-7; 22 June 1974, pp. 1116-20.
58. Trailers, pole-trailers and semi-trailers, the weight of which in any case, together with the weight of any equipment or loading thereon, exceeds 508.02 kilogrammes-
( I) An efficient brake which operates on not less than two wheels and, except in the case of a trailer which is equipped with over-run brakes, so constructed that it can be applied from the dnver's seat of the hauling vehicle. Over-run brakes shall not be fitted to any trailer the unladen weight of which together with the weight of any equipment and/or loading thereon exceeds 1.016 05 tonnes, and no trailer fitted with over-run brakes shall be attached to or drawn by any vehicle having an unladen weight which is less than the total weight of such trailer and the equipment and/or loading on such trailer.
(2) Trailers exceeding an aggregate weight of 2.032 1 tonnes first registered on and after the 1st January, 1962, and semi-trailers and pole-trailers first registered on and after the 1st January, 1962-
(a) If fitted with an air or vacuum operated braking system-a storaj?;e reservoir for air or vacuum as the case may be which meets the reqUirements of subclause (5) of clause 57 of this Schedule;
(b) A braking system of such a character that it will be applied automatically and promptly upon breakaway from the towinj?; vehicle. Means shall be provided to maintain applicatiOn of the brakes m the event of breakaway for at least fifteen minutes.
As amended by regulations published Gazette 22 June 1974, pp. 1116-20.
59. Motor cycles-Two independent and efficient service braking systems, one capable of acting directly on the front wheel and the other on the rear wheel.
60. Any braking system required by clauses 57, 58, or 59 of this Schedule shall be fitted with a device or devices which will enable the adjustment or taking up of the normal wear of the brakes. Such device or devices shall be capable of being secured or locked over the whole of its or their effective range.
61. The brake tubing and brake hose and the brake cables, rods and other linkage used in any brake system shall be so constucted as to ensure adequate, reliable and continued functioning and be so fitted to the vehicle as to prevent chafing, kinking or other mechanical damage under normal motion of any part of the vehicle.
Performance Ability of Brakes
62. Every brake with which a motor vehicle is equipped shall be capable of stopping the vehicle within a reasonable distance under the conditions prevailing at the time of its application.
63. Without limiting the generality of clause 62, the following provisions shall apply to the brakes specified:-
( 1) Service brakes-
( a) The service brake of a motor vehicle, other than an omnibus, shall be such that the motor vehicle or, where there is a trailer or other vehicle attached to it, the motor vehicle and such trailer or other vehicle, when travelling at a speed of 32.187 kilometres an hour on a dry, smooth, level road, free from loose material, can at all times, when fully loaded-
(i) Be stopped by one sustained application of the brake within the distance specified in respect of the class of vehicle or vehicles concerned in column (2) of Table A of this subclause (1); and
(ii) Be decelerated to a stop from any higher speed at which the vehicle operates by one sustained application of the brake at the average deceleration rate specified in column (3) of Table A of this subclause (1) and applicable to the class of vehicle or vehicles concerned.
TABLE A
Class of Vehicle
(1)
Car . . . . . . . . . . . . Car and trailer combination ·. . . . . . . . . . Motor cycle (front and rear brakes together) Motor truck or motor utility truck having aggregate weight less than 2.540 1 tonnes Motor truck or motor utility truck and trailer
combination having combined aggregate weight less than 2.540 1 tonnes . . . . . . Motor truck or motor utility truck having aggregate weight 2.540 1 tonnes or more Motor truck or motor utility truck and trailer
combination having combined aggregate weight 2.540 1 tonnes or more
Vehicle not equipped with brakes on all wheels when manufactured . . . . . . . . . . . . . .
Metres to Stop when Brake Applied at 32.187 kilo- metres an
hour (2)
9.144
}
13.716Average Deceleration
in Metres Per Second Per Second
(3)
4.267 2
2.895 6
(b) The service brake of a motor omnibus shall be such that the vehicle when unladen and travelling at a speed of 32.187 kilometres an hour on a dry, smooth, level road, free from loose material, can, at all times, be stopped by one sustained application of the brake within a distance of9.144 metres and can be decelerated to a stop from any higher speed at which the vehicle operates at an average rate of not less than 4.267 2 metres per second per second.
(2) Emergency brake--
(a) The emergency brake affixed to any vehicle shall be capable of holding the vehicle and any trailer or semi-trailer attached thereto stationary on any grade.
(b) The emergency brake of a motor vehicle shall be such that the vehicle, when travelling at a speed of 32.187 kilometres an hour on a dry, smooth, level road, free from loose material, can, at all times, when fully loaded-- (i) Be stopped by application of the brake within the distance specified in
respect of the class of vehicle or vehicles concerned in column (2) of Table B of this subclause (2); and
(ii) Be decelerated by one sustained application of the brake at the average deceleration rate specified in column (3) of Table B of this subclause (2) and applicable to the class of vehicle or vehicles concerned.
TABLE B
Metres to
Stop when Average Brake Deceleration Class of Vehicle
(1)
Car . . .. .. .. ..
Motor truck or motor utility truck having aggregate weight less than 2.540 I tonnes Car and trailer combination . . . . . . Motor truck and motor utility truck having
aggregate weight 2.540 1 tonnes or more Motor truck or motor utility truck and trailer
combination . . . . . . . . . . . . . . . . . . Motor omnibus of any weight ..
Applied at 32.18 7 kilo- metres an
hour (2) 22.86
34.290 4 18.288 As amended by regulation published Gazette 22 June 1974, pp. 1116-20.
63A. (Repealed).
Repealed by regulations published Gazette 16 June 1972, p. 869.