The ADR is a European agreement signed by various countries in Geneva on 30 September 1957. The initials ADR by which this agreement is known come from the name of the agreement both in French (Accord Européen Relatif au Transport des Marchandises Dangereuses par Route) and in English (European Agreement concerning the International Carriage of Dangerous Goods by Road).
The ADR regulates the transport, packaging, documentation and other aspects of the transportation of dangerous goods by road, including loading, unloading and storage of the same, whether the transport is between various countries, or inside only one territory. One important aspect is the establishment of the obligations and responsibilities of each of those involved in the operations, in order to avoid damage to persons and property as well as protect the environment.
The regulations contain a detailed list with headings for the majority of goods considered to be hazardous (coded according to a numbering established by the UN) and the regulatory requirements to be applied in each case.
The regulations affect those directly involved in the transport as well as the manufacturers of elements and materials related with the transportation, packaging and handling of hazardous merchandise.