Great Britain Theory Test Coach
Documents and the lawQuestion 386 of 424

A young child is under 1.35 metres tall. What MUST they use in your car?

  1. A suitable child seat or booster
  2. An adult seat belt only
  3. A lap belt on the front seat
  4. No restraint on short trips
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Correct answer: A suitable child seat or booster

Below 1.35 metres a child must use a child restraint that suits their weight, fitted as the maker says.

Source: The Highway Code (Department for Transport, GOV.UK), Rules for drivers and motorcyclists (89 to 102), Rule 100

Practice documents and the law

Questions last reviewed: 18 October 2026