What is the maximum permissible weight of a trailer behind a truck of 10 t permissible total mass with continuous brake system?

The maximum permissible weight of a trailer behind a truck with a permissible total mass of 10 tons and a continuous brake system is 15 tons. According to German traffic regulations, a truck with a continuous brake system (Dauerbremsanlage) can tow a trailer whose weight does not exceed 1.5 times the towing vehicle’s permissible total mass, but only up to the maximum permissible combined weight specified for the combination. In this scenario, 10 t x 1.5 equals 15 t. That’s why answer 1 is correct. This rule ensures both vehicle stability and braking safety. When answering similar questions, always consider the allowed ratio and the presence of a continuous brake system.