Danger – warns of a particular hazard or hazardous condition that is likely to be life-threatening – situations or actions that could possibly ‘kill you’;
Warning – warns of a hazard or hazardous condition that is not likely to be life threatening, but could still ‘hurt you’.
Emergency information – indicates the location of, or directions to, emergency related facilities such as exits, safety equipment or first aid facilities – these are used to ‘inform you’.
Fire – advise the location of fire alarms and fire fighting facilities and equipment; this classification is also a means of an ‘inform you’ sign.
Failing to comply with standards constitutes either an offence at law, or a breach of procedures or other directions – dependant on the kind of controls imposed at the work site or workplace.