Global ADR/TDG/ADG/MOPP localization

ADR Hazard Labels Quiz

Across Europe and much of the world, dangerous goods by road follow the ADR agreement. The hazard labels are the familiar diamonds, with class numbers, symbols, and in many cases an orange plate showing UN and hazard identification (Kemler) numbers. The recognition skill is the same one CDL learners practice: see the label, know the class.

This hub is for visual ADR hazard-label practice. It is an independent study aid, not affiliated with any ADR authority or government body, and it does not guarantee passing. Confirm all specifics against the official ADR text and your national authority or training provider.

ADR Hazard Labels Quiz · CDL Placards Hazmat placard practice

What ADR adds on top of the diamond

The labels map to the same nine classes, with a few extras worth recognizing.

  • Class labels: the standard hazard diamonds by class and division
  • Orange plates: UN number over the hazard identification (Kemler) number
  • Limited and excepted quantity marks for smaller consignments
Sample drill

Try it before you study

A quick, demo-only taste of how the practice works. Pick what each generic hazard diamond means and get instant feedback.

Demo only Score 0/5

What hazard does this placard show?

In this topic (71 pages planned)

Frequently asked questions

Are ADR labels the same as US Hazmat placards?
They share the international hazard-class system and the diamond format, so visual practice transfers. ADR adds elements like the orange Kemler plate. For rules, rely on the official ADR text and your national authority.
What is the orange plate on ADR vehicles?
It typically shows the UN number and the hazard identification (Kemler) number. Recognizing it is useful, but always verify the meaning against official ADR materials.
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