Are there any requirements or regulations that you need to comply to become a tourist railroad? Do they have a lower or higher requirements than a short line freight road? Is there a maximum track quality needed? Are they allowed to be a short line that operates freight also as a daily occurence?
As tourist line you have to comply with same FRA rules as any railroad.
As for minimum track standard, anything above excepted track, but not many people like to ride on a 10 to 15 mph ride
Same licencing of Locomotive Engineers.
As for those rule :
http://www.access.gpo.gov/nara/cfr/wais ... v4_07.html Knock yourself out