The lorry and bus theory test (Driver CPC Part 1) is longer and stricter than the car test, so the plan is the same in shape but demands more depth: you need 85 out of 100 on the questions and 67 out of 100 on hazard perception.
What you need to score
| Part 1a — multiple choice | 85 out of 100 |
| Part 1b — hazard perception | 67 out of 100 (19 clips) |
| Rule | Pass both within 2 years of each other |
A plan that works
- 1. Build the core knowledge. The Highway Code, signs and road safety underpin many questions. Our free topic practice and mock tests cover the shared ground; add the goods/passenger-vehicle specifics from official LGV/PCV materials.
- 2. Respect the higher bar. 85 out of 100 leaves little room for guessing. Revise until you genuinely understand topics rather than memorising — the question bank is large.
- 3. Train hazard perception for 19 clips. Same click-the-cause technique as the car test (see our hazard perception guide), but more clips and a 67/100 bar. Use official practice clips and don't click in a pattern.
- 4. Book the parts sensibly. You can sit Part 1a and 1b on the same day or separately — just pass both within two years of each other.
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Keep the bigger goal in view
If you're driving professionally, theory is only Part 1 of the Driver CPC. Plan your revision around the licence category you need, and book through the official service — the lorry, bus and CPC options are all on gov.uk/book-theory-test.
Practise the shared knowledge free
Start with our free car-style mock tests to lock in the Highway Code and signs, then layer the LGV/PCV-specific material on top.
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