You are driving a car with a fully loaded trailer equipped with overrun braking. What special aspect should be noted here?

The selected combination of answers highlights important aspects of operating a vehicle with a trailer equipped with an overrun brake system.

1. The risk of overheating during longer downhill drives is a critical safety concern, as it can lead to brake failure. German traffic regulations emphasize the need for drivers to be aware of their braking system limitations, especially on inclines.

2. The ineffectiveness of the overrun brake on an uphill stationary position is significant because it requires additional means of securing the vehicle. This is outlined in traffic safety guidelines that stress the importance of using adequate parking measures to prevent roll-away incidents.

3. Activating the trailer’s parking brake before uncoupling the vehicle combination is essential for safety. This is in accordance with traffic regulations that mandate securing trailers to prevent accidents when they are detached.

Understanding each part of this combination helps ensure safe driving practices and compliance with German traffic laws.