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PCV theory test questions and answers (UK)

Preparing for your DVSA PCV theory test? Use this page to explore a taster of the most up-to-date DVSA revision PCV theory test questions and answers taken from the complete DVSA PCV practice question bank.

These UK PCV revision questions link through to our full explanations, so you can understand not just which answer is correct, but why it's correct.

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PCV theory test questions and answers

Below you'll find a selection of DVSA PCV revision theory test questions. Tap or click any question to view the full DVSA-style question, see the correct answer and read the explanation.

What's the most powerful brake on a bus?

You arrive at an incident where someone is suffering from severe burns. What should you do to help?

Your vehicle is fitted with an anti-lock braking system. When should you check that it's working properly?

What should you do before driving into a tunnel?

You arrive at the scene of an incident where someone is injured. What should be given urgent priority?

You arrive at an incident where a motorcyclist is lying in the road, unconscious and bleeding. The area is safe and the emergency services have been called. What's the first priority when checking the rider?

While driving through a tunnel, your coach catches fire. What should you do if the vehicle can't be driven any further?

At the scene of a crash, a casualty is in contact with live electrical cables. What should you use to break the electrical connection?

You're at the scene of a collision. People are injured. What should be done when the risk of further collisions has been dealt with?

You arrive at the scene of an incident where a motorcyclist is lying in the middle of the road and unconscious. What's the first thing you should do?

What should you do if the brake air-pressure warning light comes on while you're driving?

You arrive at the scene of an incident. How should you deal with someone who is hysterical?

You're driving a coach carrying elderly people. You arrive at the scene of an incident. What should you do if the emergency services have already arrived?

What causes 'brake fade'?

You're about to move off in a vehicle that has automatic transmission. What must you do before you select 'D' (drive)?

You're carrying a bus full of passengers. What must you do if you see smoke coming from the engine compartment?

What will 'pumping' the brake pedal in a vehicle fitted with anti-lock brakes cause?

What must you do if your bus has hit a parked vehicle and the owner can't be found?

Your vehicle has anti-lock brakes. How does this affect you when you're braking normally?

What's an advantage of progressive braking?

Your vehicle is fitted with an air-assisted hydraulic braking system. What would warn you that the air compressor is not working?

When should an endurance brake (retarder) be used?

When can an endurance brake (retarder) be especially useful?

What can coasting downhill seriously affect?

How should you care for a passenger who's in shock?

Where must extra care be taken when using an endurance brake (retarder)?

You're driving down a snow-covered hill. Why should you take care when using an independent endurance brake (retarder)?

There's been an incident. What can you do to help a driver who's suffering from shock?

The area around an incident is safe. What's the best way to help an injured person?

You're at an incident. Why may it be harmful to move a casualty?

'Brake fade' is a loss of effectiveness of the brakes when they overheat. When would 'brake fade' be most likely to happen?

Your vehicle catches fire while you're driving through a tunnel. What should you do if the vehicle can still be driven?

You're stopped by a police officer for a suspected motoring offence. Which document will you always be asked to produce?

You've had an incident while driving through a tunnel. You aren't injured but your vehicle can't be driven. What's the first thing you should do in this situation?

You're about to drive a vehicle fitted with hydraulic brakes. What should you check before driving the vehicle?

You arrive at the scene of an incident. A casualty has an injured arm that's bleeding heavily. What could you do to help while waiting for the emergency services to arrive?

Your vehicle breaks down on a motorway. What should you do if you can't get it fully onto the hard shoulder?

What's the first thing you should try to do if your vehicle catches fire while you're driving through a tunnel?

Your vehicle is fitted with an anti-lock braking system. What's it designed to allow you to do?

You're driving down a long hill. What should you use to prevent the brakes from overheating?

You're about to drive a vehicle fitted with air-assisted hydraulic brakes. Why might the brake pedal feel hard when you press it?

At an incident, a casualty has stopped breathing. How could you help them?

When should an anti-lock braking system (ABS) warning light turn off?

Your bus is involved in an incident. What should you do if you have a passenger who's unconscious but still breathing?

What should you do when making a short stop, facing uphill?

You're approaching a bridge that has no height restriction on it. What's the minimum height under the bridge?

What's 'brake fade'?

A vehicle has rolled over and caught fire. The driver's hands and arms have been burned. How could you help the driver?

You're waiting for the emergency services to arrive at the scene of an incident. A pedestrian's leg is bleeding heavily, but there's nothing embedded in the wound. What could you do to help?

Your bus has stopped at the scene of an incident. Why should you consider moving your passengers to the front of the bus?

Which component will last longer when you use a retarder?

Your vehicle is fitted with air-assisted hydraulic brakes. What would warn you that there isn't enough air in the system?

You arrive at the scene of an incident. The emergency services have already been called. A pedestrian is bleeding heavily from a leg wound, but their leg isn't broken. What could you do to help them?

What should you do before entering a tunnel?

You arrive at the scene of an incident and someone is unconscious. What's the first thing you should do to help them?

A passenger on your bus has stopped breathing. You help them by giving CPR. When should you stop doing this?

At an incident, a casualty is unconscious but still breathing. Why would you move them?

Your vehicle is fitted with air-assisted hydraulic brakes. What fault would you suspect if the brake pedal becomes hard to press?

What should you do when an air-pressure warning device activates?

At the scene of an incident, a person has become hysterical. How should you calm them down?

How can you help to prevent 'brake fade'?

While driving through a tunnel, your vehicle catches fire. What's the first thing you should do if the vehicle can't be driven out of the tunnel?

What should you do when you drive into a tunnel?

At the scene of an incident, an injured person is lying in a busy road. What's the first thing you should do to help?

When does 'brake fade' occur?

What could prevent air pressure from building up in an air-brake system in frosty weather?

What should you do if your bus has been involved in an incident with other vehicles?

You're driving through a tunnel. What should you do if your vehicle breaks down?

You've been involved in an incident and damaged some property. What should you do if nobody else is present and your vehicle is still roadworthy?

At an incident, you suspect a casualty has back injuries. What's the best way to help them?

You're driving a vehicle fitted with anti-lock brakes. What should you do when braking in an emergency?

You're driving through a congested tunnel. What should you do if you have to stop?

What should you avoid when using an independent endurance brake (retarder) on slippery roads?

You're about to start a journey in very frosty weather. What's the likely cause of low air-brake pressure?

You've stopped at the scene of an incident where there are casualties. What should you do to help while waiting for the emergency services to arrive?

Your vehicle is involved in an incident where someone is injured. You don't produce your insurance certificate at the time. How soon must you report the incident to the police?

You're stationary. The brake air-pressure warning light comes on. Why should you keep the parking brake on?

A lorry is overtaking you on a two-lane motorway. What should you do if it doesn't have the speed to get past?

What must you do if you're involved in a traffic incident?

Which type of fire extinguisher shouldn't be used on flammable liquids?

You're about to drive an unfamiliar vehicle. What should you do if you think there may be moisture in the air-brake reservoir?

You're at the scene of an incident. How can you help someone suffering from shock?

What should you do if you're the first person to arrive at the scene of an incident?

How will anti-lock brakes improve your vehicle's safety?

Your vehicle is fully loaded. Where should you be braking when dealing with bends?

You're trying to resuscitate a casualty who isn't breathing. For how long should you continue compressions if they haven't started breathing again?

Your bus hits a low railway bridge. Nobody is injured. When and to whom should you report the incident?

Your vehicle is fitted with air brakes. What does it mean if a brake warning light shows when you've just started the engine?

When should you stop trying to resuscitate a casualty?

Your bus catches fire in a tunnel and can't be driven any further. What should you do when you've stopped safely at the side of the road?

Your engine catches fire. What should you do before attempting to put the fire out?

What should you do when you're driving through a tunnel in heavy traffic?

Your vehicle is fitted with hydraulic brakes. Why might the brake pedal go down too far when it's pressed?

You're the first person to arrive at an incident where people are badly injured. What's the first thing you should do?

What should you do after driving through a flood?

You've just started the engine. What must you do if the brake air-pressure warning light is showing?

What should anti-lock brakes let you do when you have to stop in an emergency?

You're at the scene of a traffic incident. What are the symptoms of someone suffering from shock?

You're at the scene of an incident. What does it mean if there's a plain orange rectangle displayed on one of the vehicles?

What system is used to control a vehicle's speed without using the footbrake?

You're at the scene of an incident. What would suggest someone is suffering from shock?

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How many theory test questions are in the DVSA PCV theory test?

The multiple-choice questions section of the DVSA PCV theory test contains 100 questions, and you must score at least 85 to pass this part of the test.

Each question has four possible answers, and you choose the one you believe is correct.

Preparing with realistic PCV theory test questions and answers like the ones on this page helps you get used to the style and difficulty of the actual exam.

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PCV theory test questions and answers (UK)

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PCV theory test questions and answers

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