Practice question

What is the purpose of the 'cab air suspension' (suspension pneumatique de cabine) on modern heavy commercial trucks?

  1. Isolates the driver cabin from severe road shocks and vibrations, reducing physical fatigue and spinal stress over long-distance haulage
  2. Increases the legal load capacity of the cargo bed by 10 tonnes
  3. Acts as a backup pneumatic brake for the steer axle
  4. Pumps compressed air into the engine turbocharger

Answer: A — Isolates the driver cabin from severe road shocks and vibrations, reducing physical fatigue and spinal stress over long-distance haulage

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: Cameroon Heavy-Vehicle Theory Practice Questions - Cameroon Driving Theory Test - Categories C, D & E (Heavy & Commercial) Exam →