see also Danger Signs; Like in road traffic, standardized prohibition, warning, mandatory and emergency signs must be posted at work- places. These signs are defined in the Labelling Regulation (Kennzeichnungsverordnung, Kenn-V).

• Examples of prohibition signs: no smoking, fire, contact, no access
• Examples of warning signs: Warning of toxic substances, suspended loads, dangerous electric voltage
• Examples of mandatory signs: breathing protection, safety helmet, wear hearing protection
• Examples of emergency signs: escape route, emergency exit, first aid.

Furthermore, information signs have to be provided for fire -fighting material.

• Vulnerable Personnel
• Warning Clothes