The European Agreement concerning the International Carriage of Dangerous Goods by Road, or ADR, governs transnational transport of dangerous goods.
This agreement is intended to increase the safety of international transport of dangerous goods by road. It contains the conditions under which dangerous goods, when authorized for transport, may be carried internationally.
It contains in particular new provisions concerning transport of dangerous goods security.
Volume I contains the dangerous goods list, training requirements, and criteria for classifying dangerous goods. Volume II contains requirements for packaging, marking, labeling, placarding, documentation, loading, unloading, and handling.