"City of Tucson Bicycle Laws

SEC. 5-1. Bicycles parked on a public sidewalk or street must not hinder either pedestrian or vehicles, and must allow access to adjacent property. It shall be unlawful to park a bicycle upon any public sidewalk or street in a manner that substantially impedes pedestrian or vehicular traffic or obstructs access to public or private facilities."

This is for the city, and it seems to imply that the city would need to prove I was blocking access with my bike. I've seen some bikes on public sidewalks that are parked in an obstructive way and I've never heard of anyone's bike being impounded. But the university's rules are even more restrictive. I'm not trying to be argumentative, I'm just trying to find out the answers to some questions that no one seems to be able to answer:
1. Do I have a legal right to an appeal and hearing as I would if I was handed a city citation?
2. Because it's a public university is it public property, private property, or some weird gray area?
3. If I wasn't a student would the university still have the authority to issue me a ticket, claiming that I should have read the student handbook before biking through a public university?