What is ADR?

And do you need it?

ADR is the Carriage of Dangerous Goods by Road. The training is intended to give candidates a thorough understanding of hazardous materials, as well as the skills necessary to contain and transport them whilst keeping you and other road users safe.

When is it required?

The ADR qualification is a legal requirement for anyone driving over a certain volume/weight of hazardous goods on a public road.

Hazardous goods are broken down into three ‘packing groups’ (PGs). They are:

  • PGI: Highest danger
  • PGII: Mid-level danger
  • PGIII: Lowest danger

The weight limits break down as follows:

  • PGI: 20 litres/KG (e.g. propelyne oxide)
  • PGII: 333 litres/KG (e.g. butane)
  • PGIII: 1000 litres/KG (e.g. diesel)

If you’re carrying a hazardous substance in excess of its stipulated volume/weight limit, you will need the relevant ADR qualification.

Classes of Hazardous Materials

Class Material type
1 Explosive substances and articles
2.1 Flammable gas (e.g. butane)
2.2 Non-flammable and non-toxic gases which could cause asphyxiation (e.g. nitrogen, helium, carbon dioxide)
2.3 Toxic gases (e.g. chlorine, phosgene)
3 Flammable liquids (e.g. lighter fluid, petrol)
4.1 Flammable solids, self-reactive substances and solid desensitised explosives
4.2 Substances liable to spontaneous combustion
4.3 Substances which, in contact with water, emit flammable gases
5.1 Oxidising substances
5.2 Organic peroxides
6.1 Toxic substances
6.2 Infectious substances
7 Radioactive material
8 Corrosive substances
9 Miscellaneous dangerous substances and articles


So, do you need ADR?

Different providers may deliver different classes via different methods of teaching, so it’s important to find the one that’s right for you. Have a look at what Chartwise UK provide:
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