Great Britain Theory Test Coach
Road signsQuestion 22 of 424
A blue circle with the white number 30

What does this sign mean?

  1. Maximum speed of 30 mph
  2. Lowest speed allowed is 30 mph
  3. Recommended speed of 30 mph
  4. Speed camera ahead, 30 mph
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Correct answer: Lowest speed allowed is 30 mph

The sign shows the lowest speed allowed on this road. Signs with blue circles mostly give instructions.

Source: The Highway Code (Department for Transport, GOV.UK), Traffic signs, Signs with blue circles but no red border mostly give positive instruction.

Practice road signs

Questions last reviewed: 18 October 2026