In order to avoid a collision between transport units, which are moving along a transport path of a transport assembly, and/or the collision of a transport unit with a barrier and/or the surpassing of a local speed limit, for at least one transport unit (TEi) it is preemptively determined if for the transport unit (TEi) a stopping maneuver (SMi) with a predetermined cinematic may be performed, without causing a violation of these safety requirements. In case of violation of a safety requirement, the stopping maneuver is effectively activated.