Practice question

What is the principal safety measure before replacing a truck tyre at the roadside?

  1. Immobilise the vehicle: parking brake on and wheel wedges in place
  2. Leave the truck in gear on a slope with no wedges
  3. Rely on the parking brake alone, which the syllabus treats as sufficient
  4. Keep a helper under the axle without chocking the wheels

Answer: A — Immobilise the vehicle: parking brake on and wheel wedges in place

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