What is required from the chains that are installed between the towing vehicle and the trailer?
- Correct answer: They should allow the trailer to make a 90 degree or more turn in relation to the towing vehicle.
- They should ground the electric charge (static electricity) that is accumulated in the vehicle while driving.
- They should prevent a 90 degrees angle (the letter “L”) between the towing vehicle and the trailer.
- Their links should be at least 12 mm thick.
Why this is the answer
The correct answer in the official bank: They should allow the trailer to make a 90 degree or more turn in relation to the towing vehicle.
Safety chains keep the trailer attached to the towing vehicle if the hitch fails. They must be long and slack enough not to restrict manoeuvring, so the trailer can turn at least 90 degrees relative to the towing vehicle. Chains that are too short could snap or cause loss of control in a sharp turn. Their job is not to ground static electricity.