Great Britain Theory Test Coach
Rules of the roadQuestion 123 of 424

What do red reflective road studs mark?

  1. The left edge of the road
  2. The middle of the road
  3. The edge of a slip road
  4. Temporary lane changes
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Correct answer: The left edge of the road

Red marks the left edge. White marks lanes or the middle. Amber marks the central reservation.

Source: The Highway Code (Department for Transport, GOV.UK), General rules, techniques and advice for all drivers and riders (103 to 158), Rule 132

Practice rules of the road

Questions last reviewed: 18 October 2026