Great Britain Theory Test Coach
Rules of the roadQuestion 137 of 424

When should you check your mirrors?

  1. Only before you turn at a junction
  2. Only when you hear another vehicle
  3. Often, and before you signal or change speed or direction
  4. Only when you reverse
Show answer

Correct answer: Often, and before you signal or change speed or direction

Use your mirrors often so you know what is behind and beside you. Use them in good time before any change.

Source: The Highway Code (Department for Transport, GOV.UK), Using the road (159 to 203), Rule 161

Practice rules of the road

Questions last reviewed: 18 October 2026