ADR Classes Explained: A Complete Guide to Dangerous Goods Categories

Understand all 9 ADR hazard classes — explosives, gases, flammable liquids, corrosives, radioactive material, and more.

The nine ADR classes categorise dangerous goods by hazard type — from explosives and gases to radioactive material and lithium batteries. This guide explains every class in plain English, covering hazard labels, packing groups, and what certificate you need for each category.

Read the full article on GS Driver Training Blog.

Related Articles

More guides in the ADR Training category:

• How to Get an ADR Licence
• How to get an ADR Card
• ADR Training Guide UK: Everything You Need to Know About Dangerous Goods Driver Training
• The Complete Guide to ADR Training in the UK (2026)
• ADR Hazard Classes Explained: The 9 Classes of Dangerous Goods

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