Practice question

Which pairing correctly matches trailer type to vertical load on the towing vehicle?

  1. Drawbar trailer: substantial vertical load; semi-trailer: none
  2. Centre-axle trailer (uniform load): not more than 10 % of trailer mass; semi-trailer: a substantial part of its mass and load
  3. Every trailer type transfers exactly half of its mass to the tractor
  4. Hinged drawbars support the same vertical load as a fifth wheel

Answer: B — Centre-axle trailer (uniform load): not more than 10 % of trailer mass; semi-trailer: a substantial part of its mass and load

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