Safety signs and symbols provide information about the site and hazards that exist on the site. Australian standards specify the colour, size and shape of the safety sign.
RED means DO NOT
Red signs include specify behavior or actions which are not permitted and a slash should be depicted in red over the action symbol in black.
BLUE means MUST DO
These blue signs specify that an instruction which must be carried out. These will include certain equipment needed to be worn in certain work place.
YELLOW means BEWARE
These specific signs are to warn of hazards or a hazardous condition that is likely to be life threatening.
GREEN means INFORMATION
These signs indicate the location of or directions to emergency related facilities, these signs will include exits, first aid kits or safety equipment.