In Victoria Australia, this piece of legislation exists:
PARLIAMENTARY PRECINCTS ACT 2001 - SECT 16
An authorised officer may direct a person to leave or not to enter the Parliamentary precincts if the authorised officer believes on reasonable grounds that the direction is necessary for the good order and security of the Parliamentary precincts.
My question is, under Victorian or relevant Australian law, what constitutes "reasonable grounds" and what does "good order" mean?
My other question is, can this law be used in a preemptive manner in that an "authorised officer" may give directions based on the past behaviour of the directee in unrelated circumstances outside of parliamentary grounds?