Position
of front lamps.
Provided that-
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(a) if the distance between any such vehicles exceeds five feet each vehicle shall be required to carry the same lamps as if it were not a drawing vehicle or a vehicle being drawn; and
(b) if a vehicle being drawn or any load carried thereon projects laterally on either side more than twelve inches beyond the outermost of the lamps showing a white light to the front on that side carried by the vehicle by which it is being drawn or by any preceding vehicle which is also being drawn by the same vehicle a lamp showing to the front a white light visible from a reasonable dis- cance shall be carried on the side or each side on which the vehicle or its load so projects and shall be so placed that no part of the vehicle or its load shall project out- wards more than twelve inches beyond a vertical line through the centre of such lamp.
(2) For the purposes of this regulation the distance between two vehicles shall be measured between the nearest points of such vehicles so however that the drawbar and the fittings for its attachment shall not be deemed to form part of either vehicle.
145. (1) Every lamp showing to the front a white light required to be carried on a motor vehicle under these regulations (such lamps being hereinafter referred to as "obligatory front lamps") shall
(a) be fixed so that the centre of the lamp is at a heigh not
exceeding five feet from the ground;
(b) except in the case of a tower wagon or of a motor bicycle be so fixed that no part of the vehicle or its equipment (exclusive of the driving mirror and of any direction indicator when in operation) extends laterally on the same side as the lamp more than twelve inches beyond the centre of the lamp.
(a) When two obligatory front lamps are carried on a motor vehicle, such lamps shall be fixed on opposite sides of the vehicle and, except in the case of a motor cycle having a side-car attached thereto, shall be as nearly as possible of the same power and fixed at the same height from the ground.
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146. (r) No lamp showing a light to the front shall be used Character on any motor vehicle unless such lamp is so constructed fitted of front
lamps. and maintained that the beam of light emitted therefrom——
(a) is permanently deflected downwards to such an extent that it is at all times incapable of dazzling any person standing on the same horizontal plane as the vehicle at a greater distance than twenty-five feet from the lamp whose eye-level is not less than three feet six inches above that plane; or
(6) can be deflected downwards or both downwards and to the left at the will of the driver in such manner as to render it incapable of dazzling any such person in the circumstances aforesaid, or
(c) can be extinguished by the operation of a device which at the same time causes a beam of light to be cmitted from the lamp which complies with sub-paragraph (2); or (4) can be extinguished by the operation of a device which at the same time either deflects the beam of light frum another lamp downwards and to the left in such manner as to render it incapable of dazzling any such person in the circumstances aforesaid or brings into or leaves in operation a lamp other than obligatory front lamps, which complies with sub-paragraph (a).
(2) This regulation shall not apply to any lamp fitted with an electric bulb if the power of the bulb does not exceed seven watts and the lamp is fitted with frosted glass or other material which has the effect of diffusing the light.
147. The lamps showing to the rear a red light required to Position of be carried on a motor vehicle in accordance with the provisions rear lamp, of regulation 143 shall be so fixed that-
(a) no part of the vehicle or its equipment exceeds laterally more than thirty inches on the off side or on the near side respectively from the nearest part of the off side or the near side reflector;
(b) the centre of each light is at a height not exceeding three
feet six inches from the ground;
(c) no part of the vehicle projects at any time to the rear more than six feet measured horizontally beyond each such lamp; and