Limits of the crossing
8.—(1) If it provides a reasonable contrast with the white stripes, the colour of the surface of the carriageway may be used to indicate the stripes shown coloured black in the diagram.
(2) The white stripes may be illuminated by retroreflecting material.
(3) Subject to paragraph (4) each black and each white stripe shall be of the same size and not less than 500 mm nor more than 715 mm wide as measured across the carriageway.
(4) The first stripe at each end may be up to 1300 mm wide and, if the traffic authority consider it appropriate in relation to a particular crossing having regard to the layout of the carriageway or other special circumstances, the other stripes may be not less than 380 mm nor more than 840 mm wide as measured across the carriageway.