What Is the HGV Theory Test?
The HGV theory test (also called the LGV theory test or Module 1) is the first test you must pass on your journey to becoming a qualified HGV driver. It is a computer-based test conducted at a DVSA theory test centre and consists of two parts taken on the same day: multiple choice questions and hazard perception.
You must pass the theory test before you can book your practical HGV driving test (Module 3). Your theory test certificate is valid for 2 years, so it is important to plan your training timeline carefully to avoid having to retake it.
The test covers everything a professional HGV driver needs to know — from vehicle safety and road signs to drivers' hours regulations and environmental awareness. It is more comprehensive than the standard car theory test, with 100 questions and a higher pass mark.
The Two Parts of the HGV Theory Test
Part 1: Multiple Choice
You will answer 100 multiple choice questions on a touchscreen computer. Each question has four possible answers, and you must select the correct one. Some questions may ask you to select more than one answer.
- 100 questions — 85 correct to pass
- 1 hour 55 minutes allowed
- Computer-based at DVSA test centre
Part 2: Hazard Perception
You will watch 19 video clips showing real driving scenarios from the driver's perspective. You must click the screen as soon as you spot a developing hazard. One clip contains two scoreable hazards, giving 20 hazards in total.
- 19 clips — 20 hazards to spot
- 67 out of 100 points to pass
- Click too often and you score zero
Important: You must pass both parts on the same day. If you fail either the multiple choice or the hazard perception, you will need to retake both sections. The DVSA fee is £26 for multiple choice and £11 for hazard perception (£37 total).
What Topics Does the HGV Theory Test Cover?
The multiple choice section tests your knowledge across a wide range of professional driving topics. Here are the key areas you will be examined on:
Vehicle Handling & Safety
Questions on vehicle weights, dimensions, braking systems, coupling/uncoupling, and safe driving techniques specific to large goods vehicles.
Hazard Awareness
Identifying potential dangers on the road, understanding stopping distances for heavy vehicles, and anticipating the actions of other road users.
Road & Traffic Signs
Knowledge of road signs, road markings, and traffic signals — including those specific to HGV drivers such as weight limits and height restrictions.
Drivers' Hours & Tachographs
EU and domestic drivers' hours rules, tachograph operation, rest periods, and record-keeping requirements for professional drivers.
The Highway Code
General road rules, speed limits for HGVs, motorway driving, roundabouts, and vulnerable road users — all tested from a professional driver's perspective.
Environmental Awareness
Fuel-efficient driving, reducing emissions, noise pollution awareness, and the environmental responsibilities of professional HGV drivers.
Free HGV Theory Test Practice Resources
You do not need to spend money on expensive revision apps. Here are the best free and official resources to help you prepare:
DVSA Official Practice Theory Test
The DVSA offers a free practice theory test on gov.uk. This uses the same question bank as the real test and is the most reliable way to assess your readiness.
Try the free DVSA practice test
DVSA Theory Test Revision Books
The official DVSA revision guide for lorry drivers covers every topic in the test. Available from bookshops and online. This is the single most important study resource.
Highway Code Online
The full Highway Code is available free online at gov.uk. Pay particular attention to sections on motorway driving, speed limits for HGVs, and vulnerable road users.
Read the Highway Code free
DVSA Hazard Perception Practice
The DVSA YouTube channel has free hazard perception practice clips. Watch these to understand the scoring system and practise spotting developing hazards.
HGV Theory Test Frequently Asked Questions
How many questions are in the HGV theory test?
The HGV theory test has 100 multiple choice questions. You have 1 hour and 55 minutes to complete them, and you need to score at least 85 out of 100 to pass. The questions cover a wide range of topics including vehicle safety, drivers' hours, the Highway Code, and hazard awareness.
What is the pass mark for the HGV theory test?
For the multiple choice section, you need 85 out of 100 correct answers. For the hazard perception section, you need at least 67 out of 100 points. Both sections must be passed on the same day — if you fail one, you must retake both.
How much does the HGV theory test cost?
The DVSA fee for the HGV/LGV theory test is currently £26 for the multiple choice test and £11 for the hazard perception test — a total of £37. This is paid directly to the DVSA when you book your test. Our theory preparation course is separate and helps ensure you are fully ready before booking.
Can I take the HGV theory test before getting my provisional licence?
No. You must hold a provisional HGV/LGV licence before you can book and take the theory test. You will also need a valid D4 medical certificate to obtain your provisional licence. We can guide you through the full application process.
How long is the HGV theory test valid for?
Your HGV theory test pass certificate is valid for 2 years. You must pass your practical driving test (Module 3) within this period, otherwise you will need to retake the theory test. We recommend planning your training timeline carefully to avoid this.
Is the HGV theory test harder than the car theory test?
The HGV theory test is more challenging than the car test. It has 100 questions instead of 50, covers HGV-specific topics like drivers' hours and tachographs, and requires a higher pass mark (85%). However, with proper preparation and study, most learners pass first time.
What is the hazard perception test for HGV?
The hazard perception test consists of 19 video clips showing real driving scenarios. You must identify developing hazards by clicking the screen as soon as you spot them. One clip contains two scoreable hazards, giving 20 hazards in total. You need 67 out of 100 to pass.
Does GS Driver Training help with theory test preparation?
Yes. We provide guidance on what to study, recommend the best revision resources, and can include theory preparation as part of your overall HGV training package. Our instructors have extensive experience helping learners pass their theory test first time.