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HGV Theory Test — Complete Practice Book 2026
The DVSA HGV Theory Test has 100 multiple choice questions — you need 85 correct answers (85%) to pass. This practice book covers every examined topic: driver hours, tachograph, vehicle safety, road signs, motorway rules, hazard awareness and eco-driving. Every question includes a full explanation so you understand why the answer is correct.
101
Questions + Study Notes
85%
Pass mark required
57 min
Real test time limit
8
Topic categories
Study First
Key Facts — Memorise These
Review these essential numbers and rules before attempting questions. They appear repeatedly across every category of the HGV Theory Test.
⏰ Driver Hours — The Numbers That Must Be Exact
| Rule | Limit | Key Notes |
|---|---|---|
| Daily Driving | 9 hours | Extendable to 10hrs but ONLY TWICE per week |
| Extended Daily | 10 hours max | Maximum 2 times per week — not 3, not 4 |
| Weekly Driving | 56 hours | Hard limit — cannot be extended |
| Fortnightly Driving | 90 hours | Across any 2 consecutive weeks combined |
| Continuous Driving | 4.5 hours | Then MUST take a break — no exceptions |
| Break Required | 45 minutes | OR: 15min first THEN 30min (this order only) |
| Regular Daily Rest | 11 hours | Uninterrupted |
| Reduced Daily Rest | 9 hours min | Maximum 3 times between weekly rests |
| Split Daily Rest | 3hrs + 9hrs | Must be in this order. Total = 12hrs |
| Regular Weekly Rest | 45 hours | After max 6 x 24hr periods from last weekly rest |
| Reduced Weekly Rest | 24 hours min | Reduction compensated by end of 3rd following week |
| WTD Average Week | 48 hours | Over 17-week reference period — includes ALL work |
🖥 Tachograph — Critical Rules
| Situation | What To Do |
|---|---|
| Card stops working mid-journey | Print record at START and END of each day. Write name, card number, activities on printout. Report and replace within 7 days. |
| Card forgotten at home | Do NOT drive. Card must be present. Cannot use another driver’s card. |
| Vehicle unit download frequency | At least every 90 days |
| Driver card download frequency | At least every 28 days |
| Records to carry at check | Current day + previous 28 calendar days + driver card |
| Tachograph symbols | Steering wheel=driving. Crossed hammers=other work. Bed=rest. Cross=availability |
| Replace lost/damaged card | Apply within 7 calendar days of discovery |
| Data retention by operator | Minimum 2 years |
🚛 HGV Speed Limits (Vehicles over 7.5 tonnes)
| Road Type | HGV over 7.5t | Car for comparison |
|---|---|---|
| Motorway | 60 mph | 70 mph |
| Dual Carriageway | 50 mph | 70 mph |
| Single Carriageway (NSL) | 40 mph | 60 mph |
| Built-up area | 30 mph | 30 mph |
⚖ Vehicle Weights & Dimensions
Maximum gross weight — articulated HGV (6 axles): 44 tonnes
Maximum gross weight — rigid HGV (3+ axles): 32 tonnes
Maximum vehicle width: 2.55 metres (refrigerated: 2.6m)
Minimum tyre tread depth (HGV): 1mm across central 3/4 of tyre width
Maximum front axle weight: 11.5 tonnes
Maximum semi-trailer length: 13.6 metres
Maximum overall articulated length: 16.5 metres
Lane restriction: HGVs prohibited from right-hand lane on motorways with 3+ lanes