The Traffic Signs (Temporary Obstructions) Regulations 1997

Regulation 10

SCHEDULE 1 THE ROAD VEHICLE SIGN

1.  A road vehicle sign shall be a flexible sheet on which appears a triangle.

2.  The triangle shall be equilateral. The area marked A in the diagram shall be coloured red, and shall be reflectorised to Class 1 of British Standard BS 873 Part 6 or an equivalent standard which has been approved by a recognised standardising body in an EEA State.

3.  The area marked B in the diagram may be coloured white, in which case it shall be reflectorised to Class 1 of British Standard BS 873 Part 6 or an equivalent standard which has been approved by a recognised standardising body in an EEA State. If the area marked B is not coloured white it shall be of the same colour as the background specified in note 4 below.

4.  The background shall be coloured yellow which shall be fluorescent and may also be reflectorised.

5.  The total area of the sheet, including the red triangle, shall be not less than 0.8 square metres.

Regulation 12

SCHEDULE 2

THE TRAFFIC PYRAMID—FIRST DIAGRAM

1.  The areas marked A B and C in the diagram indicate areas of the surface on each face of the pyramid as follows:

• A—Surface coloured red which may be reflectorised.

• B—White surface which must be reflectorised.

• C—Surface coloured red which may be reflectorised. Up to 50% of this surface may be obscured by constructional components.

2.  The pyramid shall not be directly illuminated either internally or externally.

3.  The base may be of any colour or it may be omitted.

THE TRAFFIC PYRAMID—SECOND DIAGRAM

1.  The areas marked A and B in the diagram indicate areas of the surface on each face of the pyramid as follows:

• A—Surface coloured red which may be reflectorised.

• B—White surface which must be reflectorised.

2.  Each outer edge of the triangular face shall be the same length.

3.  The pyramid shall not be directly illuminated either internally or externally.

Regulation 13

SCHEDULE 3

THE TRAFFIC TRIANGLE—FIRST DIAGRAM

1.  The areas marked A B and C in the diagram indicate areas of the surface on the face of the triangle as follows:

• A—Red reflectorised surface. Not more than a total of 15 square centimetres may be obscured by constructional components.

• B—Red fluorescent surface.

• C—May have either red reflectorised surface or a combination of both red reflectorised and red fluorescent surface. Not more than 10 square centimetres in each corner may be obscured by constructional components.

2.  The corners shall be radiused.

3.  All sides shall be the same length.

4.  The reflectorised areas of the surface may be internally illuminated provided that such illumination is steady, presents a uniform appearance throughout that area and does not impair the retroreflecting properties of that area of the surface. The triangle shall not be directly illuminated externally.

THE TRAFFIC TRIANGLE—SECOND DIAGRAM

1.  The areas marked A B and C in the diagram indicate areas of the surface on the face of the triangle as follows:

• A—Red reflectorised surface.

• B—Red fluorescent surface (having an area of not less than 315 square centimetres).

• C—Red edging which may be omitted.

2.  The corners shall be radiused.

3.  All sides shall be the same length.

4.  The reflectorised areas of the surface may be internally illuminated provided that such illumination is steady, presents a uniform appearance throughout that area and does not impair the retroreflecting properties of that area of the surface. The triangle shall not be directly illuminated externally.