What is the maximum permissible towed load behind a truck (continuous brake system)?

For trucks with a continuous brake system, the maximum permissible towed load is up to 1.5 times the permissible total mass of the truck. This rule ensures that the vehicle’s braking system can safely handle the added weight of the trailer, especially in situations requiring strong or prolonged braking. Choosing this maximum value is only allowed if both the truck and trailer have continuous brakes (such as air brakes) that are in good working order. For vehicles without a continuous brake system, much stricter limits apply. It’s important to always check the technical specifications of the truck and trailer and never exceed this regulatory limit, as doing so endangers road safety and violates German traffic law.