23.—(1) Except as permitted by this rule, no fog lamp may be fitted to a motor vehicle.
(2) Subject to this rule, any motor vehicle may be fitted with one or both of the following:
(a)
a matched pair of front fog lamps;
(b)
either —
(i)
a single rear fog lamp; or
(ii)
a matched pair of rear fog lamps.
(3) A fog lamp fitted to a motor vehicle shall not be lit —
(a)
at any time other than in conditions of seriously reduced visibility; or
(b)
in a manner as to cause undue dazzle or discomfort to other persons using the road.
(4) A matched pair of fog lamps fitted to a motor vehicle shall have a lateral position of not less than 600 millimetres between the centre of both lamps.
(5) A fog lamp shall —
(a)
be fitted to a motor vehicle in such a manner as to comply with regulation 48 (Uniform Provisions Concerning the Approval of Vehicles with Regard to the Installation of Lighting and Light-signalling Devices) of Addendum 47 to the Agreement;
(b)
in the case of a front fog lamp, comply with regulation 19 (Uniform Provisions Concerning the Approval of Motor Vehicle Front Fog Lamps) of Addendum 18 to the Agreement; and
(c)
in the case of a rear fog lamp, comply with regulation 38 (Uniform Provisions Concerning the Approval of Rear Fog Lamps For Power-Driven Vehicles and their Trailers) of Addendum 37 to the Agreement.
(6) Every fog lamp retrofitted to a motor vehicle shall be constructed and fitted in accordance with the standard approved by the Registrar for this purpose.
(7) In this rule —
“front fog lamp” means a lamp used to improve the illumination of the road in front of a motor vehicle in conditions of seriously reduced visibility;
“rear fog lamp” means a lamp used to render a motor vehicle more readily visible from the rear in conditions of seriously reduced visibility.