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.
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
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.
What hazard does this placard show?
That is the idea: see the sign, name the hazard, and keep the ones you miss in a review pile. The full app drills all nine hazard classes.
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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.