(c) Where the marking shown in diagram 1013.1 is placed as described in any of the cases in sub-paragraph (b)(1) to (iii) above, then such studs as aforesaid and so spaced as aforesaid shall be fined either within the width or each of the said two lines or between them.
In this paragraph the expression "automatic railway level crossing" means an automatic half-barrier level crossing, and an automatic open crossing (R) as both those crossings are defined for the purposes of Regulation 11(2) and includes a level crossing which is the same as an automatic open crossing (R) except that the operation of the light signals is monitored at or near the crossing by the driver of the train instead of remotely from the crossing.
(2) Subject to the foregoing provisions of this Regulation, any road marking may be illuminated with reflecting material and studs incorporating reflectors may be fitted to the markings shown in diagrams 1003.4 to 1012.1, 1025.2, 1025.3 and 1040 to 1042 in such a manner that any such stud shall not be fitted to any mark coloured white and forming part of any of the markings so shown as aforesaid but shall be applied to the surface of the carriageway in the gap between any two such marks:
Provided that in the case of the markings shown in diagram 1011 or 1012.1 the said studs shall if fitted, be applied to the surface of the carriageway at the side of road adjacent to the line shown in the diagram.
(3) Reflectors incorporated in studs shall be white except that in the case of reflectors fitted to the markings shown in diagrams 1009 to 1012.1, 1025.2, 1025.3, 1041 and 1042 they may be—
(a) red where the near side edge or a carriageway is indicated to drivers or approaching motor vehicles, or when fitted to the markings shown in diagrams 1041 and 1042 to indicate the offside edge of a carriageway,
(b) amber to indicate the offside edge or a carriageway which is contiguous to a central reservation or which carries traffic in one direction only, and
(c) green when fitted to the markings shown in diagrams 1009, 1010. 1025.2 and 1025.3 where the edge or any part of the carriageway available for through traffic at a road junction, a lay—by or a parking place is so indicated as aforesaid.
In this Regulation "central reservation" means any provision made in a road (not being the provision of a street refuge) for dividing the road for the safety or guidance of vehicular traffic.
26.—(1) Non-depressible studs incorporating reflectors and fitted as a part of a road marking shall either be in the shape of a circle having a diameter of not more than 20 millimetres in excess of the width of the road marking in which the studs are fitted or of a rectangle having a length of not more than 250 millimetres and a width of not more than 20 millimetres in excess of the width of the road marking to which the studs are fitted.
(2) Subject to paragraph (3), no road marking shall project above the surface of the carriageway in the immediate vicinity more than 6 millimetres at any point unless it is is road marking fitted with non-depressible studs when those studs shall not project above the said surface more than 18 millimetres are are highest point nor more than 6 millimetres at their edges, or unless it is the road marking shown in diagram 1003.4 when that marking shall not project above said said surface more than 125 millimetres at the highest point nor more than 6 millimetres at its edge.
