When must safety signs be used?
Safety signs must be used whenever a hazard or danger can not be avoided adequately or reduced in another way. Before installing safety signs an employer should examine whether the hazard can be avoided or reduced by collective precautions (precautions that protect everybody) or safer ways of doing the work.
What colours and shapes should be used on safety signboards?
Red for prohibition
Yellow for caution
Green for positive action
Blue for mandatory actions
O Discs for prohibitions and instructions
Δ Triangles for warnings
□ Squares and rectangles for emergency and information signs