Mock Test #4 – Car Theory Questions

Driver's Mock Test #3 - Car Theory Questions

#1: You have driven through deep water. What is the first thing you should do?

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Test your brakes at the first safe opportunity by pushing gently on the brake pedal to make sure that they work. If they are not fully effective, gently apply light pressure while driving slowly. This will help to dry them out.

Highway code rule: 121.

#2: It is recommended that you turn on your hazard warning lights when your vehicle is:

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Hazard warning lights may be used when your vehicle is stationary and temporarily obstructing traffic. You may also use them when you are on a motorway or unrestricted dual carriageway and you need to warn drivers behind you of a hazard or obstruction ahead.

Highway code rule: 116.

#3: If traffic lights aren’t working, you:

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If the traffic lights are not working, treat the situation as you would an unmarked junction and proceed with great care.

Traffic lights not working means that the traffic lights do not light up. An unmarked junction does not have any give way or stop signs and will have no junction lines. In general, no one has priority in this type of junction.

Highway code rule: 176.

#4: This arm signal means that the driver in front intends to:

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For slowing down, extend the right hand at shoulder level with palm facing downward, and wave it downwards and upwards.

Use an arm signal to emphasise or reinforce your signal lights if necessary.

Highway code rule: 103.

#5: What does this sign mean?

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The sign prohibits the use of a road by motor vehicles.

#6: If you need to change lane, you should:

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Blind spots are areas around your vehicle your mirror does not cover.

Before taking off, making lane changes or turns, quickly turn your head to look for hidden pedestrians or vehicles. Avoid driving in other drivers' blind spots.

Highway code rule: 133.

#7: You are approaching a roundabout with a cyclist just ahead. The cyclist is signalling a right turn. What is the best thing to do in this situation?

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Give plenty of room to cyclists and horse riders who may stay in the left-hand lane and signal right if they intend to continue round the roundabout. Allow them to do so.

Highway code rule: 187.

#8: You are travelling on a motorway. A mandatory speed limit is shown above the hard shoulder. What does this mean?

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An Active Traffic Management (ATM) Scheme helps reduce congestion. In areas where an Active Traffic Management (ATM) Scheme is in force, the hard shoulder may be used as a running lane. You will know when you can use this because a speed limit sign will be shown above all open lanes, including the hard shoulder.

Highway code rule: 269.

#9: What is the normal speed limit where you see street lights but no speed limit signs?

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The 30 mph limit usually applies to all traffic on all roads with street lighting unless signs show otherwise.

National speed limits for cars and motorcycles are: 30 mph (48 km/h) in built-up areas, 60 mph (96 km/h) on single carriageways, and 70 mph (112 km/h) on dual carriageways and motorways.

Highway code rules: 124, 125.

#10: You have broken down on a motorway. When you use the emergency telephone you will be asked for:

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Give full details to the Highways Agency or the police. Be prepared to state:
  • Nature of problem
  • Your name
  • Vehicle details
  • If applicable, membership number of motoring organisation.
Also inform them if you are a vulnerable motorist such as disabled, older or travelling alone.

Highway code rule: 275.

#11: You arrive at the scene of a collision. Someone is unconscious in their vehicle. When should you call the emergency services?

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Arrange for the emergency services to be called immediately with full details of the incident location and any casualties.

Highway code rule: 283.

#12: You are about to go down a steep hill. Which of the following is a good idea if you want to control the speed of your vehicle?

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Select a lower gear before you reach a long downhill slope. This will help to control your speed. Use your brakes carefully. Avoid excess use of the brakes, which become less effective if they overheat.

Highway code rule: 160.

#13: Which of the following result from drinking alcohol?

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Any amount of alcohol affects your ability to drive safely. It affects judgement of speed, distance and risk. It reduces co-ordination and slows down reactions. It also gives a false sense of confidence.

Highway code rule: 95.

#14: You approach this police officer from behind. What does the signal mean?

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This signal is used to beckon traffic on.

You must obey signals given by police officers, traffic officers, traffic wardens, and signs used by school crossing patrols.

You can download the pdf version of Signals by Authorised Persons here

Highway code rule: 105.

#15: Which sign marks no entry for vehicular traffic, including pedal cycles?

No entry for vehicular traffic, including pedal cycles (usually indicates the end of a one-way road where all traffic is travelling in the other direction)

#16: You arrive at the scene of an accident. There are casualties still in vehicles. When should you attempt to move casualties?

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If there is no danger from approaching traffic or fire, you should not move casualties still in vehicles.

Highway code rule: 283.

#17: You are driving along a wet road. How can you tell if your tyres are losing traction?

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As your tyres lose traction, you will also lose the ability to steer. To recover some traction and regain steering control, you must slow down. Take your foot off the accelerator.

Highway code rules: 119, 120, 227.

#18: You are on a motorway at night. You MUST have your headlights switched on unless:

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When your vehicle is broken down on the hard shoulder you should use your hazard lights. Keep your sidelights on when it is dark or visibility is poor.

Highway code rules: 274, 275.

#19: You are at traffic lights wishing to turn. When a filter green arrow turns on for your lane, you should:

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When facing a green filter arrow, you may proceed only in the direction of the arrow. Give way to vehicles and pedestrians still in the junction at the time of the light change. A directional green filter arrow means that you have priority over traffic as their lights will be on red when you make the turn. Always check that opposing traffic has stopped before proceeding.

Highway code rule: 177.

#20: Signs have different colours and shapes for easy identification. What are blue circles used for?

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Blue circles are generally used for positive (mandatory) instructions.

They may also indicates a route for use only by particular classes of vehicle.



More Car Theory Test Questions

Another test with 20 car theory questions taken from a larger set of test questions and answers.

You can use our FREE theory questions to practise for the DVSA examination and for self-evaluation. Each mock test helps you determine if you are ready for the final exam or not.

Our mock tests aren’t only for newbies. They can also be used by anyone who wants to brush up their knowledge about U.K. driving rules. Several new laws have been added the last 10 years, laws that every driver must know, regardless if they have already passed the knowledge exam or not.

The first book you must study is the U.K. Highway code. Make sure you have the latest copy. You must also get the booklet ‘Know Your Traffic Signs‘. It explains all the traffic signs you should know for your exam.

Even drivers who passed their driving test some years ago should keep up to date with recently introduced signs. has several simple tests that cover the U.K. traffic signs. They are a good supplement to the tests found on this website.

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