What is meant by the term jack-knifing?

  1. When the trailer is travelling faster than the drawing vehicle.
  2. When the trailer is too heavy to be drawn by the tractor.
  3. When the vehicle slides due to ice or water on the road.
  4. When the jack is not strong enough to lift an axle.

Correct Answer

When the trailer is travelling faster than the drawing vehicle.

Explanation: Towing a trailer or caravan dramatically reduces the stability of the towing vehicle. If a driver brakes sharply or slows down quickly; the trailer may pivot around the tow hitch coupling; causing both vehicles to go off course; and possibly overturn.

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