Free theory test: Plates
Try our free mini test with 10 questions and get a taste of how we prepare you for the driving test. No registration required!
How the official exam works
25
questions
5
errors allowed
An example from the question set
What does this hazard identification number mean?
Hazard identification number 64 means: toxic solid, flammable or self-heating. The first digit indicates the main hazard, while subsequent digits indicate subsidiary hazards.
Why try our theory test?
Get started instantly
No registration or payment required. Just click and start – get your results immediately.
Learn as you practice
Get explanations after each question so you learn from your mistakes.
Real exam preparation
Our questions are designed to resemble the real theory test at Statens Vegvesen.
Works everywhere
Practice on mobile, tablet or PC. Perfect for the bus, the couch or the waiting room.
Free vs. full access
Full access Recommended
- 461 unique questions
- Full tests (25 questions)
- Detailed explanations
- History and statistics
- Unlimited practice
What our users say
I passed the theory test for car class B today with flying colors! Have used sites from your competitors before, but think you have a much more organized and more realistic tests. Your tests are very similar to those at the road authorities, and if you just read enough and take test after test you'll pass. I'm absolutely delighted with prøve.no and will recommend it to everyone I know! Customer service is also great, and you can submit questions about the tests to customer service and get help.
I don't think I could have passed the theory exam without prove.no! The questions were very similar, and I think the exam was very easy after practising in there - I passed it easily on my first attempt.
Frequently asked questions
Is ADR Hazard Plates an official DSB exam?
No. ADR Hazard Plates is a practice tool for learning to read orange ADR plates — it is not an official DSB exam. The official ADR exam at DSB is the basic course exam (G-ADR), optionally combined with specializations. Use the Hazard Plates test as a supplement to the ADR basic course.
How many questions and how many errors are allowed?
The full version has 25 questions with max 5 errors — you need at least 20 of 25 correct to pass the practice test. The shorter practice test has 15 questions for quicker repetition.
What do the numbers on an orange ADR plate mean?
The upper number is the hazard ID (Kemler code) describing the type of hazard — the first digit indicates the main hazard, and doubling intensifies it (33 = highly flammable liquid). The lower number is the UN number identifying the substance itself (e.g. 1203 = petrol). An X prefix means the substance reacts dangerously with water.
Who benefits from practising hazard plates?
Drivers taking the ADR basic course, fire and rescue crews, police, factory staff and logistics workers all benefit from being able to read orange ADR plates quickly and correctly. Correct interpretation of hazard numbers is critical during dangerous goods incidents.
What does the X prefix in front of a hazard number mean?
The X prefix in front of a hazard number means the substance reacts dangerously with water. Example: X423 — flammable solid that forms flammable gas on contact with water. Water must never be used as an extinguishing agent without expert assessment.
Ready to test yourself?
Take our free mini test and see how you're doing. It only takes a few minutes!
Start free test now