Red reflectorised surface. Not more than a total of 15 cm2 may be obscured by constructional components.
Red fluorescent surface.
May have either surface A or a combination of surfaces A and B. Not more than 10 cm2 in each corner may be obscured by constructional components.
All dimensions are in millimetres.
The corners shall be radiused.
Fig. 1 ADVANCE WARNING TRIANGLE.
[G.N. Nos. S 171/81; S 266/81; S101/86; S350/89; S 222/91; S 299/91; S460/94; S167/95; S298/95; S 477/95; S 620/98; S 81/99]