Why should you switch your headlights on when it first starts to get dark?

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To make your dials easier to see

So others can see you more easily

So that you blend in with other drivers

Because the street lights are lit

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Your headlights and tail lights help others on the road to see you. It may be necessary to turn on your headlights during the day if visibility is reduced; for example, due to heavy rain. In these conditions, the light might fade before the street lights are timed to switch on. Be seen to be safe.

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This is question 13 of 98 in our collection of free UK DVSA car theory test revision questions. Use the explanation to help you understand the topic, then continue to another question to check whether you can apply your knowledge in a different situation.

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What should you do if your vehicle catches fire while you're driving through a tunnel?

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There's been a collision. A motorcyclist is lying injured and unconscious. Why should you only remove their helmet if it's essential?

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The conditions are good and dry. When should you use the 'two-second rule'?

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You're at an incident. What could you do to help an unconscious casualty?

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You're being overtaken by a long, heavily laden lorry. What should you do if it's taking a long time for it to overtake?

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