Transportation of Dangerous Goods Regulations

4.15.2 UN numbers, except UN numbers for dangerous goods included in Class 1, Explosives, must be displayed on a large means of containment in accordance with subsection 4.8(2) if the dangerous goods

• (a) are in a quantity or concentration for which an ERAP is required; or

• (b) are a liquid or a gas in direct contact with the large means of containment.