What's the maximum authorised mass (MAM) of a category B vehicle with a traditional internal combustion engine?
- A 3 tonnes
- B 3.5 tonnes
- C 4.25 tonnes
- D 7.5 tonnes
Why this is the answer
Any more weight than this will take the vehicle into a different category, therefore making it unsuitable for a category B driving test. There's a higher MAM for electric or hydrogen-powered zero emissions vehicles.
Why the other answers don't fit
- A
- 3 tonnes — Three tonnes is below the category limit.
- C
- 4.25 tonnes — 4.25 tonnes is the allowance for zero-emission vehicles, whose batteries add weight.
- D
- 7.5 tonnes — 7.5 tonnes belongs to category C1.
Where this comes from
- Driving: the essential skills — section 2, section 19
Rule numbers link to The Highway Code on gov.uk.
Where this question comes from
The question, its options and the explanation are reproduced word for word from the DVSA revision question bank under licence. The licence requires them to appear unaltered, so we cannot reword them and neither can anyone else — that is why you will meet the same wording on other sites. Everything else on this page is written by Theory Hub: the explanation of why each wrong answer is wrong, the topic guide and the revision notes.
Asked in: Driving Instructor (ADI Part 1)
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