There are exemptions for dangerous goods transported in a limited quantity, or in more than one limited quantity. In small quantities, these dangerous goods present a limited hazard when transported. This exemption is used mainly for the transport of dangerous goods from distributors and manufacturers to retail sale outlets.
There are conditions that apply to these goods. For example, the means of containment must be clearly and properly marked. Also, when an accumulation of dangerous goods exceeds 500 kg gross mass and is offered for transport by one consignor to one destination, the dangerous goods must be accompanied by a document.
Dangerous goods, other than explosives, are considered in "limited quantity" if:
- the consignment has a gross mass less than or equal to 30 kg and under normal conditions of transport (including handling), there will be no accidental release that could endanger public safety; and
- the dangerous goods are:
- solid
, have a mass in kg less than or equal to the number shown for them in column 6 of Schedule 1,
- liquid
, have a volume in litres less than or equal to the number shown for them in column 6 of Schedule 1, or
- gas, including a gas in a liquefied form, are contained in a means of containment that has a water capacity in litres less than or equal to the number shown for them in column 6 of Schedule 1.