(c) in diagrams 616, 1046 and 1047 when placed at a site which has been approved in writing by or on behalf of the Secretary of State, and
(d) in diagrams 712.1,719.3 and 729.2 when including a symbol represented in any of the diagrams in Part I, and no symbol so represented in Part II of Schedule 1 to the Regulations, may be placed on or near a road in the circumstances prescribed respectively at (a) to (d) above for those signs notwithstanding that they do not in those circumstances so indicate as aforesaid.
7. The signs shown in diagrams 701 to 717 may be placed only on or near a primary route and the signs shown in diagrams 718 to 726 may be placed only on or near a non-primary route, except that the signs shown in diagrams 718.2 and 718.3 may be placed on or near any road when varied to include a blue border.
8. The signs shown in diagrams 823 to 825 when the colour of the background is blue may be placed only on or near a motorway, when the colour of the background is green may be placed only on or near a primary route and when the colour of the background is white may be placed only on or near a non-primary route; and the signs shown in diagrams 837.1 to 838.2 may be placed only on or near a primary route or a motorway.
9. The signs shown in diagrams 901.1 to 925 may be placed only on or near a motorway.
10. The traffic signs shown in the diagrams whose numbers appear in column 1 of the table set out in this paragraph shall not be used on a road unless so used in conjunction with the road markings shown in the diagrams whose numbers appear in column 2 of that table opposite to the number in column 1 to which they relate:
Provided that the provisions of this paragraph requiring the use of the signs shown in diagrams 601.1, 602,6!1.1 and 650 in conjunction with a road marking shall not apply during the execution of works on a road in the vicinity of the place
| Column 1 | Column 2 |
| Sign diagram number | Road marking diagram number |
| 601.1 | both 1002 and 1022 |
| 602 | both 1003 and 1023 |
| 611.1 | both 1003.3 and 1003.4 |
| 650 | either 1025.1 or 1025.3 |
| 653 | both 1048 and 1049 |
| 654 | both 1048 and 1049 |
