AMC1 CAT.IDE.A.260 Marking of break-in points
CAA ORS9 Decision No. 1
MARKINGS — COLOUR AND CORNERS
(a) The colour of the markings should be red or yellow and, if necessary, should be outlined in white to contrast with the background.
(b) If the corner markings are more than 2 m apart, intermediate lines 9 cm x 3 cm should be inserted so that there is no more than 2 m between adjacent markings.