(2) Subject to paragraphs (4) to (6), zig-zag lines shall be placed on the approaches to each side of a relevant crossing facility so as to form controlled areas as defined by regulation 27(1).
(3) Zig-zag lines shall not be placed on a road except in accordance with—
(a) paragraph (2); or
(b) regulations made, or having effect as if made, under section 25 of the 1984 Act (pedestrian crossings regulations).
(4) So long as the condition in paragraph (5) is complied with, paragraph (2) shall not apply where, in accordance with an authorisation given under section 64(1) or (2) of the 1984 Act, a relevant crossing facility has been provided on a road before 1st April 2003 but without the placing of zig-zag lines on the approaches as mentioned in paragraph (2).
(5) The condition is that the signs and markings indicating the facility are maintained in accordance with the authorisation under which they were placed and any special directions under section 65 of the 1984 Act that were given in conjunction with the authorisation.
(6) Paragraphs (4) and (5) shall cease to have effect on 1st January 2007. Placing of signs and light signals shown in Schedule 11 50. The light signals prescribed by regulation 37(1) and 45 and the signs and light signals shown in any diagram in Schedule 11 may be displayed only on or near—
(a) a motorway; or
(b) an all-purpose dual carriageway road.
51.—(1) The light signals prescribed by regulation 37(1) shall not be displayed over or in relation to a traffic lane in conjunction with the sign shown in diagram 6001, 6002, 6003, 6006, 6006.1, 6008, 6009, 6009.1, 6009.2, 6011, 6011.1 or 6012. (2) Paragraph (1) shall not apply to the signs shown in diagrams 6006.2, 6008.1 and 6009.3 when the light signals prescribed by regulation 37(1) are placed at the side of a carriageway so as to convey prohibitions or requirements applying to all traffic proceeding along the carriageway in a particular direction.
52. The sign shown in diagram 6002, 6021 or 6031.1 may be displayed only over a traffic lane and the sign shown in diagram 6006, 6006.1, 6006.2, 6008, 6008.1, 6009, 6009.1, 6009.2, 6009.3, 6022 or 6032.1 may be displayed only at the side of the carriageway to which the indications given by the sign relate, or projecting over part of that carriageway, so as to convey warnings, prohibitions or requirements applying to all traffic proceeding along the carriageway in a particular direction.
Placing of portable light signals prescribed by regulation 35
53.—(1) A traffic authority may, pursuant to section 65(1) of the 1984 Act, cause or permit the placing of the portable light signals prescribed by regulation 35 if and only if—
(a) permission is given in writing, or in a case of urgency, given orally and confirmed in writing as soon as reasonably practicable thereafter; and
(b) either—
(i) the written permission of the authority includes express approval to the placing of the signals at a particular site; or
(ii) the authority is satisfied that the circumstances of the particular case fall within one of the sets of circumstances specified in paragraph (2).
(2) The sets of circumstances referred to in paragraph (1)(b)(ii) are—
(a) where the signals are to be operated and maintained by, and are under the regular supervision of, a constable in uniform during the progress of a temporary scheme of traffic control;
(b) where the signals are placed on a length of road along which—
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