Page:The Traffic Signs Regulations and General Directions 1975 (UKSI 1975-1536).pdf/16

 Illumination of signs shown in diagrams 560 and 561 by reflectors etc.

17.—(1) The sign shown in diagram 560 shall be illuminated by any one of the following four methods, that is to say:—

(a) by the use of 14 circular reflectors of the corner cube type, each reflector having a diameter of 22 millimetres,

(b) by the use of reflecting material extending over the whole surface of the sign,

(c) by the use of rectangular reflectors of the corner cube type extending over an area of not less than 45 square centimetres, or

(d) by the use of reflectors consisting of bi-convex lenses extending over an area of not less than 45 square centimetres;

and the sign shown in diagram 561 shall be illuminated by any one of the said methods except only that one described in sub-paragraph (a).

(2) The colour reflected by the sign shown either in diagram 560 or in 561 shall be red when the sign indicates the edge of the left-hand side of the carriageway or an obstruction near that edge and shall be white when the sign indicates the edge of the right-hand side of the carriageway or an obstruction near that edge, unless the sign indicates the edge of the right-hand side of the carriageway of a dual- carriageway road or an obstruction near that edge when the said colour so reflected shall be amber.

Illumination of signs by reflecting material

18.—(1) Nothing in this Regulation shall apply to the signs shown in diagrams 536, 560 and 561.

(2) Subject to the provisions of the last and the next succeeding paragraph and of Regulation 19, every sign shown in a diagram in Schedule 1 shall be illuminated by the use of reflecting material in accordance with the provisions of paragraphs (5) and (6) unless the sign is at all times or at particular times illuminated by lighting in accordance with the provisions of Regulation 15 or 16.

(3) The requirements of the last preceding paragraph shall not apply.—

(a) to the signs shown in diagrams 605.1, 624, 625.1, 636 to 641, 650, 651, 739 to 739.3, 742.1 to 742.3, 747 to 749,752, 752.1, 758,810.1,826, 828,833 to 836, 841 to 852, 857 and 913.1, nor

(b) to any sign shown in diagrams 642 (when the diameter size is 450 millimetres or less), 646,647,660 10 662,734.1 to 734.8, 743 to 746.1, 801 to 810, 815, 827 and 830 to 832 if any such sign is so illuminated by street lighting throughout the hours of darkness as to be legible from a reasonable distance by drivers of approaching motor vehicles.

(4) Subject to the foregoing paragraphs of this Regulation and to Regulation 19, any sign shown in a diagram in Schedule 1, other than those shown in diagrams 637 to 641, 650, 660 to 662,810.1 and 828 may be illuminated by the use of reflecting material in accordance with the following provisions of this Regulation

(5) Subject to paragraph (6), where reflecting material is used on any sign shown in a diagram in Schedule 1 it shall be of the same colour as that of, and extend throughout, that part of the sign to which it is applied:

Provided that no reflecting material shall be applied to—

(a) any part of a sign coloured black,

(b) that part of any sign shown in diagrams 604 or 823 to 825 or of any sign shown in Part III of Schedule 1 which is coloured green,