LST ISO 3864-1:2011 Graphical symbols - Safety colours and safety signs - Part 1: Design principles for safety signs and safety markings (ISO 3864-1:2011, identical)
LST ISO 3864-1:2004LST ISO 3864-1-2004/P:2004LST ISO 3864-1-2004-06
LST ISO 3864-1:2011 history
2011LST ISO 3864-1:2011 Graphical symbols - Safety colours and safety signs - Part 1: Design principles for safety signs and safety markings (ISO 3864-1:2011, identical)