in that schedule, other than a plate shown in diagram 662, is used in conjunction with that sign, the said plate shall be illuminated by the use of reflecting material in accordance with the provisions or Regulation 13(3).
Section IV
The Signs Shown in Schedule 2
20.—(1) Subject to the the provisions of these Regulations, a traffic sign consisting of a line or mark on a road (in these Regulations referred to as a "road marking") for conveying to traffic on roads a warning, a requirement or information of the description specified under a diagram (other than diagrams 1003 and 1013.1) in Schedule 2 shall be of the size and type shown in the diagram relating to that warning, requirement or information.
(2) In any diagram in schedule 2, the dimensions indicated in brackets against dimensions not so indicated may be treated as an alternative to the last mentioned dimensions.
(3) Where the circumstance so require, the indication given by any of the signs shown in the diagrams in Schedule 2 shall or may be varied as hereinafter provided in this paragraph:—
(a) any indication given by such a sign be varied in the respect (if any) in which it is shown below the diagram relating to that sign the indication may be varied;
(b) In the sign shown in diagram 1035 route numbers place names and the direction in which any arrow-head points shall be varied and inter-changeable to accord with the circumstances but the words "turn-left", "ahead" or "turn right" shall nor appear as a part or the said sign.
21. A road marking for conveying to vehicular traffic the requirement specified in paragraph (2) or the next succeeding Regulation shall be of the size and type shown in diagram 1003.
22.—(1) For the purposes of this regulation—
"minor road" means the read in a road junction on which road there are placed the transverse lines shown in diagram 1003;
"major road" means the road at a road Junction into which road there emerges vehicular traffic; from a minor road.
(2) Except as provided by the next following paragraph, the requirement conveyed by the said transverse lines, whether or not they are used in conjunction with the sign shown in diagram 602, shall be that no vehicle shall proceed past such one of those lines as is nearest to the major road into that road in such a manner or at such a time as is likely to cause danger to the driver or any other vehicle on the major road or as to necessitate the driver of any such other vehicle to change its speed or course in order to avoid an accident with the first mentioned vehicle.
