Three enforceable regulatory bodies
Tertiary signage simultaneously meets three enforceable regulatory bodies. The Labour Code (articles R4224-1 et seq., R4227-1 et seq.) requires the marking of emergency exits, the display of fire safety instructions, and a periodic six-monthly inspection of safety lighting. Article R.4227-5 also conditions the maximum capacity of the floor plate on units of passage: a single emergency staircase 1.40 to 1.50 m wide allows a maximum of 100 people per floor (Labour Code, R.4227-4 and R.4227-5), a structuring data point for the signage sizing of evacuations.
Safety pictograms and colours fall under the ISO 7010 standard, adapted for floors, walls, and door leaves. The law of 11 February 2005 and the RGAA set the visual accessibility requirements, applicable to character height, contrast, and tactile or braille media in reception areas.