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Hazard Classifications (ADR)

The 'European Agreement Concerning the International Carriage of Dangerous Goods by Road', in French, the Accord Dangerous Routier, and from this point on Known as ADR, was brought into force by the United Nations on 29th January 1968. This Document has 2 annexes, Annex A which defined the goods and their requirements for Carriage, and Annex B which lays down the specifications and conditions of the vehicles performing the carriage.

The regulations are split into 9 parts or Chapters, and margined for reference. In October 1992, the ADR regulations were reformatted to a more user friendly format. The Books are in 2 Volumes of approx 1200 pages. These Books have corrigenda issued to them regularly, and are reprinted / updated every 2 Years. For instance after the 9/11 terror attacks on the Twin Towers in New York, the 2005 ADR regulations included Chapter 1.10 Dangerous Goods Security Regulations which presently VOSA are enforcing.
The Current Regulations are ADR 2011, and are next to be updated in 2013.

In England, The carriage of Dangerous Goods was regulated by 'The Carriage of Dangerous Goods and Transportable Pressure Equipment Regulations' which as time grew on referred more and more to ADR regulations. The 1st of July saw the 2009 edition of the CDG, which refer mostly to ADR, but indeed has it's own variations to the International Regulations.

For instance in UK Regulations:-

Hazard Classifications
Dangerous goods have to be classified in accordance with the requirements in ADR and assigned a UN number, name, description and packing group (where appropriate) as indicated in the Dangerous Goods list in ADR. They are therefore assigned to different classes dependent on their predominant hazard as follows:

Class 1 - Explosive substances and articles
Class 2 - Gases
Class 3 - Flammable liquids
Class 4.1 - Flammable Solids, self reactive substances and solid desensitized explosives
Class 4.2 - Substances liable to spontaneous combustion
Class 4.3 - Substances which, in contact with water, emit flammable gases
Class 5.1 - Oxidizing substances
Class 5.2 - Organic peroxides
Class 6.1 - Toxic substances
Class 6.2 - Infectious substances
Class 7 - Radioactive substances
Class 8 - Corrosive substances
Class 9 - Miscellaneous dangerous substances and articles

Please also note that and for packing purposes, certain substances are assigned a packing group :-

Hazardous Diamonds & Classes
To view the classes depicted, click on the image above or go here Hazard Classes

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Hazardous Material includes a number of other products identified which may not be included in the above list of Classes 1 - 9. These are classified as "Obnoxious" and for the purposes of carraige would fall within Class 9. These include:

There are other products which would similarly fall within the list above, a further example which is not as common in the UK as it is in certain other European member states includes Human Waste, where cess pits from rural domestic dwellings require emptying and their contents transported elsewhere. For further information concerning this and other waste products, please use the link below.

Infectious Substances, Clinical Waste and Diagnostic SpecimensPDF logo

Further Reading
The following links will assist in obtaining further information on ADR and (in our view) should be considered definitive reading.

ADR (2011) - UNECE
Carriage of Dangerous Goods and Use of Transportable Pressure Equipment Regulations 2009PDF logo

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