2.—(1) In these Rules, unless the context otherwise requires —
“Agreement” means the United Nations Economic Commission for Europe Agreement Concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles, Equipment and Parts which can be Fitted and/or be Used on Wheeled Vehicles and the Conditions for Reciprocal Recognition of Approvals Granted on the Basis of these Prescriptions, formerly known as the Agreement Concerning the Adoption of Uniform Conditions of Approval and Reciprocal Recognition of Approval for Motor Vehicle Equipment and Parts, done at Geneva on 20th March 1958;
[S 656/2009 wef 01/01/2010]
“dipped beam” means a beam of light emitted by a headlamp, being a beam which is deflected downwards or both downwards and to the left to such an extent that it is at all times incapable of dazzling any person who is on the same horizontal plane as the vehicle at a greater distance than 7.5 metres from the lamp and whose eye-level is not less than one metre above that plane;
“front lamp”, in relation to a vehicle, means a lamp which is capable of showing to the front of the vehicle a light and is fitted not more than 300 millimetres nearer the vertical plane passing through the longitudinal axis of the vehicle than the furthest point of the vehicle on the same side thereof;
“headlamp” means a lamp on a vehicle which is designed, when lit, to illuminate the road in front of the vehicle;
“hours of darkness” means the time between 7.00 p.m. and 7.00 a.m.;
“illuminated area” means, in relation to a lamp, the area of the orthogonal projection on a vertical plane at right angles to the longitudinal axis of the vehicle of that part of the lamp through which light is emitted;
“low beam” means a beam of light emitted by a lamp other than a headlamp, being a beam which is deflected downwards or both downwards and to the left to such an extent that it is at all times incapable of dazzling any person who is on the same horizontal plane as the vehicle at a greater distance than 7.5 metres from the lamp and whose eye-level is not less than one metre above that plane;
“main beam” means a beam of light emitted by a headlamp, being a beam which is not a dipped beam;
“matched pair”, in relation to lamps fitted on or to a vehicle, means a pair of lamps, one on each side of the vertical plane passing through the longitudinal axis of the vehicle (disregarding for the purpose of ascertaining such axis, any side-car attached thereto) in respect of which the following conditions are satisfied:
(a)
each lamp in the pair is alike in respect of shape, size and power and is at the same height above the ground; and
(b)
the distances between the centre of each lamp in the pair and the vertical plane passing through the longitudinal axis of the vehicle do not vary by more than 25 millimetres;
“rear lamp”, in relation to a vehicle, means a lamp which is capable of showing to the rear of the vehicle a red light visible from a reasonable distance;
“width” means the width of a vehicle measured between vertical planes parallel to the longitudinal axis of the vehicle and passing through the extreme projecting points thereof exclusive of any driving mirror and direction indicator.
(2) Neither of the expressions “front lamp” and “rear lamp” shall include any lamp carried by a vehicle for any one or more of the following purposes only:
(a)
for use as, or to illuminate, a direction indicator;
(b)
for intimating the intention of the driver of the vehicle to stop or to slow down;
(c)
for showing a light to the rear when reversing the vehicle; and
(d)
for the internal illumination of the vehicle.
(3) For the purposes of the Schedule —
“centre plane”, in relation to a vehicle, means the vertical plane through the longitudinal axis of the vehicle; and
“side plane”, in relation to a vehicle, means a vertical plane parallel to the longitudinal axis of the vehicle and passing through the extreme projecting points on a side of the vehicle exclusive of any driving mirror or lamp.