For the coupling of vehicles to combinations of vehicles with an unbraked trailer, the maximum authorized mass of which does not exceed 750 kg, the following applies:
The weight of the trailer is not tied to the technical specification of the towing vehicle .
The trailer must be visibly marked at the rear with the "Other hazards" road sign .
The instantaneous mass of the trailer must not exceed the maximum permissible mass for unbraked trailers, which is stated in the technical certificate and registration certificate of the specific towing vehicle .