What should you note regarding the trailer coupling, when transporting pedelecs on a rear-mounted carrier system?

Your selected combination of the three choices is indeed correct. Each of the points you mentioned is essential for safely transporting pedelecs on a rear-mounted carrier system and is supported by German traffic regulations.

1. The rear-mounted carrier system must be suitably designed: This ensures that the carrier can handle the weight and dimensions of the bikes safely, preventing any accidents due to equipment failure.

2. The trailer coupling must have a suitable vertical load capacity: This is crucial because overloading the trailer coupling can lead to instability while driving, increasing the risk of loss of control or accidents.

3. The car’s tyre inflation pressure must be adjusted appropriately: Proper tyre pressure is vital for maintaining vehicle handling and safety, particularly when the vehicle is carrying extra weight from the bikes.

Understanding and adhering to these regulations not only ensures compliance with German traffic laws but also enhances safety on the road for both the driver and other road users.