Try a DVSA car practice theory test question from the Attitude DVSA topic

When should you use your vehicle's horn?

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You must not use your vehicle's horn between 11:30pm and 7am in a built-up area or when you're stationary, unless a moving vehicle poses a danger. Its function is to alert other road users to your presence.

This is DVSA car revision theory test question 23 of 98 from our free UK car practice theory test. This practice test follows the same format as the real DVSA multiple-choice car theory test.

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