Which masses (weights) must be applied in a ratio for the calculation of the maximum permissible towed load behind a truck (continuous brake system)?

The correct answer involves combining the ratios of the permissible total mass of both the truck and the trailer. Under German traffic regulations, when calculating the maximum permissible towed load, it is essential to consider the ratio of the truck's permissible total mass to both its actual mass and the trailer's permissible total mass. This ensures that the towing vehicle is not overloaded and can safely control the trailer.

The importance of these ratios lies in maintaining vehicle safety, as an imbalance can lead to dangerous driving conditions. For instance, a truck with a higher permissible mass compared to a trailer that exceeds its limits can compromise braking efficiency and stability. Understanding these ratios is crucial for compliance with German traffic laws and ensuring safe towing practices.