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When should rear fog lights be used?

  1. A.Rear fog lights should be used only at dawn and dusk.
  2. B.When both the rear tail lights are broken.
  3. C.Rear fog lights should always be used.
  4. D.When driving in dense fog or falling snow.
Show answer & explanation

Correct answer: D. When driving in dense fog or falling snow.

A driver must only use rear fog lights in dense fog or falling snow. Using fog lights in normal road and weather conditions can dazzle or blind following motorists. Also, fog lights may make brake lights harder to see.

This is an official-style question from the Safe and Responsible Driving topic of the Ireland driver theory test (Cat. B). Practise all 807 questions free on iTest.ie — with timed mock exams, automatic mistake tracking and progress sync across devices.

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