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QuestionsSafe and Responsible Driving › Question 134 of 420

What is meant by the term jack-knifing?

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

Correct answer: C. When the trailer is travelling faster than the drawing vehicle.

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.

This is an official-style question from the Safe and Responsible Driving topic of the Ireland driver theory test (Cat. B). Practise all 807 questions free on iTest.ie — with timed mock exams, automatic mistake tracking and progress sync across devices.

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