How are you allowed to transport persons on trailers used for agricultural purposes?

In German traffic rules, when transporting persons on trailers used for agricultural purposes, it is allowed for them to sit on adequate seats to ensure safety and stability. Additionally, standing up is permitted only if it is necessary to accompany the load, for example, to supervise or manage it during transport. However, standing on empty trailers is not allowed because it increases the risk of falling and injury. These rules help ensure that persons are transported safely and securely on agricultural trailers.