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What does it mean when the driver of a vehicle uses the horn intermittently and has the emergency signal switched on?

Correct answer

That, due to particularly serious circumstances, they are carrying out a service normally reserved for priority vehicles.

It is warning of the exceptional article 70 situation: a non-priority vehicle forced by particularly serious circumstances, with no alternative means available, to perform a service normally reserved for priority vehicles. It uses intermittent horn warnings together with hazard lights if fitted, or the prescribed warning procedure. The driver must obey traffic rules, especially at junctions, and officers may require justification. This does not turn it into a priority vehicle enjoying all associated exemptions.

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All options

  • That, due to particularly serious circumstances, they are carrying out a service normally reserved for priority vehicles.

  • That they are about to overtake.

  • That the vehicle has broken down.

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