32.—(1) Subject to the next following paragraph, a lens or lenses of the size and colour shown in diagram 3001 in Schedule 3. which, when illuminated, shows a green arrow—
(a) may be substituted for the lens showing the green light in the light signals referred to in Regulation 31(2) in any of the methods shown in diagrams 3003, 3005, 3006 and 3011 in the said Schedule;
(b) may be affixed to the light signals referred to in Regulation 31(2) or to those signals as altered in accordance with the preceding sub-paragraph in any of the methods shown in diagram 3002 and diagrams 3004 to 3011 in the said Schedule.
In this paragraph, the substitution authorised in sub-paragraph (a) thereof in the method shown in the said diagram 3011 shall be treated as having been effected by means of the upper arrow shown in that diagram, the lower arrow shown therein being treated as affixed in accordance with sub-paragraph (b) thereof.
(2) When a lens is, or lenses are, so affixed as provided in paragraph (1)(b) and any one lens so affixed is of the larger of the two sizes specified in diagram 3001 in the said Schedule, the distance between the centre of that lens and the centre of any other lens affixed next in position immediately above, below or to the side of that first mentioned lens shall be not less than 415 nor more than 440 millimetres.
(3) The direction in which the arrow shown in diagram 3003 in the said Schedule points may be varied so as to be—
(a) a direction which lies straight upright, or
(b) a direction which lies at any angle between 90 degrees either to the left or to the right of the said upright direction.
(4) The direction in which any arrow shown in any of the diagrams 3002, 3004 to 3006, 3009 and 3010 in the said Schedule points may be varied so as to be—
(a) a direction which lies straight upright, or
(b) a direction which lies between the direction shown in the diagram showing that arrow and the said upright direction.
(5) The direction in which the upper arrow shown in diagram 3007 or the said Schedule points may be varied so as to be a direction which lies at an angle from the upright position shown to an angle or 45 degrees to the left and the direction in which the upper arrow shown in diagram 3008 in that Schedule points may be so varied as aforesaid to an angle or 45 degrees to the right.
(6) The direction which the lower arrow shown in each of the said diagrams 3007 and 3008 points may be varied so as to be a direction which lies at any an angle from the position shown in each such diagram respectively to an angle of 45 degrees towards the upright position as shown for the upper arrow in each such diagram.
