Paragraph 11 I1

Subject to sub-paragraphs (2) and (3), the parts of the sign not coloured black must be reflectorised.

The part of the sign coloured yellow must be fluorescent, unless the retroreflecting material is applied to that part in horizontal strips with a gap between each strip or the retroreflecting material is itself also fluorescent.

The part of the sign coloured red may be fluorescent.