These are considered mandatory signs indicating that an instruction must be carried out.
Generally the symbols are white, and appear on a blue disc.
Description:
High-quality, Australian Standards (AS1319-1994) workplace signage.
Prohibition, Warning, Caution, Information, Emergency, Fire, and Danger signs.
Sign sizes/types and their respective viewing distances.
12mt = 300 x 225mm - Metal
18mt = 450 x 300mm - Metal and Corflute
27mt = 600 x 450mm - Metal and Corflute