Great Britain Theory Test Coach
Rules of the roadQuestion 118 of 424

When may you use hazard warning lights while you are driving?

  1. On any road when you are lost
  2. When you want to park briefly
  3. When you thank another driver
  4. On a motorway or unrestricted dual carriageway, to warn of a hazard ahead
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Correct answer: On a motorway or unrestricted dual carriageway, to warn of a hazard ahead

While driving, use hazard lights only on a motorway or unrestricted dual carriageway, to warn of a hazard or obstruction ahead.

Source: The Highway Code (Department for Transport, GOV.UK), General rules, techniques and advice for all drivers and riders (103 to 158), Rule 116

Practice rules of the road

Questions last reviewed: 18 October 2026