Theory Test Practice Ireland

Question 499 · Car theory test

When is jackknifing most likely to occur?

Pick an answer to test yourself.

Correct answer

When trying to reduce speed sharply while travelling downhill.

Official 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.

Topic
Vehicle maintenance

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