Originally Posted by
ALATOWER
…might U right, but where can I get info about minima separation for crossing RW clearance in this case? What safety distance should we applies?
Standart "runway occupation" rules should apply. If you cleared a/c to land - you can't clear anybody else to touch the runway. If you cleared a/c to cross the threshold, you can't clear anybody to land unti crossing one vacates. All of the details should be stated in local Operations Manual. "Safe distance" is usually 60m from runway edge and should be well marked on ground.