How do you determine the maximum authorised combination mass of a vehicle combination consisting of a towing vehicle with rigid drawbar trailer?

To determine the maximum authorised combination mass for a towing vehicle with a rigid drawbar trailer, it's crucial to consider both the maximum authorised mass of the trailer and the permissible vertical load on the towing vehicle.

The correct method involves checking the trailer's maximum mass and subtracting the vertical load. This vertical load can affect how much weight the towing vehicle can handle. If this vertical load exceeds the permissible limit for the towing vehicle, it impacts the overall weight calculation for safe towing.

Understanding these details is vital for compliance with German traffic regulations. They ensure that the vehicle combination operates within safe limits, minimizing risks on the road. Accurate calculations help prevent accidents related to overloading and ensure the vehicle’s stability and braking efficiency.

By thoroughly considering all elements of the answer options, one ensures all regulations and safety measures are adhered to in the usage of vehicle combinations.