Towing without a designated safety pin and without safety chains would cause:
- Correct answer: Disengagement of the trailer from the towing vehicle.
- Fracture of the towing pin.
- Excessive wear of the towing shaft.
- Faster and safer harnessing of the trailer.
Why this is the answer
The correct answer in the official bank: Disengagement of the trailer from the towing vehicle.
A designated safety pin and safety chains are meant to keep the trailer connected to the towing vehicle even if the main connection opens or fails. Without them the trailer may disconnect while driving and endanger road users. Their absence does not make harnessing faster or safer.