To connect vehicles in road trains with a non-braking trailer, the maximum permissible mass of which does not exceed 750 kg, it is valid that:
The mass of the trailer has nothing to do with the technical specification of the traction vehicle .
The trailer must be visibly marked at the rear with the symbol of the road sign "Other hazards" .
The instantaneous mass of the trailer must not exceed the maximum permissible mass for non-braking trailers, which is indicated in the technical passport and the registration certificate of a specific traction vehicle .