ADR (treaty)

ADR, formally the Agreement of 30 September 1957 concerning the International Carriage of Dangerous Goods by Road is a 1957 United Nations treaty that governs transnational transport of hazardous materials.

"ADR" is derived from the French name for the treaty: Accord relatif au transport international des marchandises Dangereuses par Route).

Until 31 December 2020, the treaty was fully named European Agreement concerning the International Carriage of Dangerous Goods by Road.

Concluded in Geneva on 30 September 1957 under the aegis of the United Nations Economic Commission for Europe, it entered into force on 29 January 1968.

This article states that with the exception of certain exceptionally dangerous materials, hazardous materials may in general be transported internationally in wheeled vehicles, provided that two sets of conditions be met: The appendices consist of nine chapters, with the following contents The classes of dangerous goods according to ADR are the following: Each entry in the different classes has been assigned a 4 digit UN number.

Members of the ADR treaty.
Non-members.
The sign to the left of the Blackwall Tunnel approach road shows Class E.