1.Taking account of the types of activity and/or size of the undertakings concerned, Member States may specify categories of undertakings allowed to replace totally, partially or temporarily the illuminated signs, and/or acoustic signals provided for in this Directive by alternative measures which afford the same level of protection.
2.Member States may derogate, after consulting both sides of industry, from the application of Annex VIII, section 2 and/or Annex IX, section 3, whilst laying down alternative measures guaranteeing the same level of protection.
3.Member States shall consult, in accordance with national laws and/or practice, employers' and workers' organizations when implementing paragraph 1.