diagram 1022, and the sign shown in diagram 602 may be used on a road only in conjunction with the road marking shown in diagram 1003 and the road marking shown in diagram 1023:
Provided that the provisions of this paragraph requiring the use of the signs shown in diagrams 601 and 602 in conjunction with a road marking shall not apply during the execution of works on a road in the vicinity of the place where the sign shown in diagram 601 or in diagram 602 is erected, if those works necessitate the temporary removal of that marking.
11.—(1) The sign shown in diagram 501 may be used only either in combination with a plate of the type shown in diagram 502 and in conjunction with the sign shown in diagram 601 or in combination with a plate of the type shown in diagram 503 and in conjunction with the sign shown in diagram 602.
(2) The sign shown in diagram 533 may be used only in combination with a plate of the type shown in diagram 534 or 535.
(3) The sign shown in diagram 562 may be used only in combination with a plate of the type shown in diagram 563.
(4) The sign shown in diagram 617 may be used only in combination with a plate of the type shown in diagram 618.
(5) The sign shown in diagram 622 may be used only in combination with a plate of the type shown in diagram 623.
(6) The sign shown in diagram 630 may be used only in combination with a plate of the type shown in diagram 631.
12. A plate of the type shown in diagrams 502, 503, 511 , 518, 519, 525 to 527, 534 , 535, 546, 547, 553, 563, 570 to 573, 607, 608, 618, 620, 623, 627, 631, 643 to 645, 802 to 805 and 807 may be used only in combination with the signs which are specified beneath the diagram showing the plate.
13. A plate of the type shown in diagrams 637, 639, 640 or 641 may be placed on or near the side of a road only if there is placed in conjunction with that plate and on the same side of the road a road marking shown in diagrams 1015, 1016, 1017 or 1018, except that this paragraph shall not apply where any such plate is so placed for the purposes of a temporary statutory provision.
14. A plate of the type shown in diagram 638 or 640 may be placed on or near the side of a road only if there is placed in conjunction with that plate and on the same side of the road a road marking shown in diagram 1019, 1020 or 1021, except that this paragraph shall not apply where any such plate is so placed for the purposes of a temporary statutory provision.
15. The sign shown in diagram 545 when used in combination with the plate shown in diagram 547 may be placed only on a road on which no speed limit of 30 m.p.h. or less on the driving of motor vehicles is in force and on which a school crossing patrol is from time to time on duty in the vicinity of, but not nearer than 100 yards to, the site of the sign.
16.—(1) The sign shown in diagram 557 may not be retained at any place after the expiration of six months from the date on which the sign was erected at that place or such longer time as may be approved in writing by or on behalf of the Minister or the Secretary of State, as the case may be, or in any case after the termination of the need for the sign.
(2) Where the said sign has been removed after giving a warning to vehicular traffic in relation to a length of road, it shall not within twelve months from the date of its removal be erected for the purpose of giving warning to such traffic in relation to any part of that length of road unless approval in writing of its erection has first been given by the Minister or the Secretary of State, as the case may be.
