Wouldn't it just be easier to have some kind of set policy? For example:
1 - Guard knocks on locked toilet to get response, if response is given, guard can asks for ticket and ticket is either slid under door or guard waits until the passenger is ready to come out
2 - If no response given, the guard informs the party inside the toilet that he will be opening the door of the toilet in 30 seconds, and asks them to make themselves decent and prepare for a ticket inspection
3 - after 30 seconds guard opens door and asks for tickets, if no tickets are presented, charge a penalty fare or file for prosecution
I've seen things worse than toilet fare-dodging, such as people in suitcases, and people who will hide up in the luggage rack and place bags in front of them!
1 - Guard knocks on locked toilet to get response, if response is given, guard can asks for ticket and ticket is either slid under door or guard waits until the passenger is ready to come out
2 - If no response given, the guard informs the party inside the toilet that he will be opening the door of the toilet in 30 seconds, and asks them to make themselves decent and prepare for a ticket inspection
3 - after 30 seconds guard opens door and asks for tickets, if no tickets are presented, charge a penalty fare or file for prosecution
I've seen things worse than toilet fare-dodging, such as people in suitcases, and people who will hide up in the luggage rack and place bags in front of them!