Driving theory questions

You intend to pull a trailer with your car. Which of the following is true?

  • Incorrect: đź”’
  • Correct: đź”’
  • Incorrect: đź”’

As soon as a trailer is connected to a car, it alters the car’s traction. It can improve it or make it worse, depending on the situation. Ball pressure is an important factor.

High ball pressure

Excessive load at the front of the trailer. This results in poor traction with the front wheels, and may cause other road users to be dazzled by the dipped headlights.

High ball pressure
The load is at the very front of the trailer, and is therefore pressing the coupling device towards the ground. The car is forced to follow it, and as the car is straight, the front end is elevated.

Low ball pressure

Excessive load at the back of the trailer. This results in poor traction with the rear wheels. Can lead to a driving ban.

Low ball pressure
The load is at the very back of the trailer, and is therefore tipping the trailer backwards, which in turn pushes the coupling device upwards. The rear of the car is lifted by the coupling device.

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