safety and/or health sign – a sign providing information or instruction about
safety or health at work by means of a signboard, a colour, an illuminated sign
or acoustic signal, a verbal communication or hand signal;
(b)signboard – a sign which provides information or instructions by a
combination of shape, colour and a symbol or pictogram which is rendered
visible by lighting of sufficient intensity. In practice many signboards may be
accompanied by supplementary text (eg ‘Fire exit’ alongside the symbol of a
moving person – see also paragraph 40). Signboards can be of the following
types: