Foundations
Module 1 of 6 · Foundations

What are 'dangerous goods'?

The everyday things that can hurt people if moved badly — and why there are rules for them.

ADR 2025 — Introduction
Friendly introduction & study aid. Not the official ADR certificate. The legal certificate comes from a DfT/SQA-approved training centre and the SQA exam.
Draft beginner content — pending review by a qualified DGSA

Lessons

Emerald · Lesson

Petrol, bleach, gas, batteries — things you already know

20s ADR 2025 — Introduction
In the cab

Imagine your van right now. A jerry can of petrol from a quick fuel stop. The bleach you grabbed for the office. A BBQ gas bottle a mate asked you to drop off. A parcel full of power-tool batteries. That's not exotic chemistry — that's a normal Tuesday. And ADR has something to say about every single one of them.

Dangerous goods are not exotic. They are everyday products that can hurt people, animals or the environment if they leak, catch fire or spill. A jerry can of petrol on a hot day. The bleach under your kitchen sink. A gas bottle for the BBQ. A box of lithium batteries in a parcel. When any of these are moved by lorry, van, train, ship or plane, special rules apply so they travel safely.

Dangerous goods = ordinary products that can cause harm.
Key points
  • Examples: petrol, bleach, BBQ gas, batteries.
  • Special rules apply when these are moved.
ADR Citation
ADR 2025 — Introduction
ADR (the European agreement on the international carriage of dangerous goods by road) sets out the safe-carriage rules for products that present a danger in transport.
Draft content, pending DGSA review. Verify against the cited clause before relying on it.
Emerald · Lesson

Why we need rules — what could go wrong

15s ADR 2025 · 1.1.1

Imagine the bleach leaking onto a box of food. Or a petrol can splitting in the back of a hot van. Or batteries shorting in a parcel and catching fire on a plane. These have all happened, and people have been hurt. The rules exist to stop them happening — by saying how to pack, label, load, drive and unload these products safely.

Real incidents (fires, spills, poisonings) shaped the rules.
Key points
  • Rules cover packaging, labelling, loading, driving, unloading.
  • Safety first — people, then property, then the environment.
ADR Citation
ADR 2025 · 1.1.1
ADR applies to the international carriage of dangerous goods by road; the agreement's purpose is to ensure such carriage is conducted in conditions of safety.
Draft content, pending DGSA review. Verify against the cited clause before relying on it.
Emerald · Lesson

Who has to care?

15s ADR 2025 · 1.4 / 1.8.3

The rules don't only apply to chemical factories. A corner shop sending a courier with a bottle of nail-polish remover is affected. So is a roofer with a tin of petrol in the van. So is an online seller posting power-tool batteries. The biggest businesses have a Dangerous Goods Safety Adviser (DGSA) who oversees compliance. Smaller senders might fall under simpler 'limited quantity' rules. Either way, somebody is responsible.

Affects shops, couriers, tradespeople, online sellers — not just factories.
Key points
  • Larger firms appoint a DGSA (compliance specialist).
  • Small / low-quantity senders may use simpler rules — still rules.
ADR Citation
ADR 2025 · 1.4 / 1.8.3
Chapter 1.4 sets the safety obligations on the consignor, carrier, driver and other duty holders; 1.8.3 requires undertakings whose activities include carriage of dangerous goods to appoint a Dangerous Goods Safety Adviser.
Draft content, pending DGSA review. Verify against the cited clause before relying on it.
Emerald · Lesson

What this Foundations track will give you

15s ADR 2025 — Introduction

By the end of these short modules you will know what a UN number is, recognise the diamond hazard symbols you see on lorries and parcels, understand the nine hazard classes in plain words, know what a packing group means, and have a clear picture of what 'ADR' is and why it matters in your job. After that, the proper exam prep — ADR Driver or DGSA — will make far more sense.

UN numbers · hazard symbols · the nine classes · packing groups.
Key points
  • About 30 minutes total, plain English.
  • Routes you into the real ADR Driver / DGSA exam prep next.
ADR Citation
ADR 2025 — Introduction
ADR 2025 is the current edition of the European agreement; UN numbers, hazard classes and packing groups are all defined in Part 2 (classification) and Part 3 (dangerous goods list) and are the foundations every learner needs.
Draft content, pending DGSA review. Verify against the cited clause before relying on it.

Practice questions

0 / 4 answered
  1. 1
    Which of these is a 'dangerous good'?
  2. 2
    Why do dangerous goods rules exist?
  3. 3
    True or false — only big chemical factories are affected by the rules.
  4. 4
    What does DGSA stand for?
Practice quiz — pick an answer to see whether it's right and why.
Next: UN numbers — the 4-digit 'name tag'Go to ready check