Originally Posted by AngryScientist

what college??

if you really use public transportation a lot with your bike, you may want to consider a folding bike. the nice single speed ones can be fairly light, and they are really made for transportation on and off busses, trains, into apartments, dorms, etc. when i was taking my bike and the train to work, my folder revolutionized how much more convenient and stress free my life was. just fold the bike up and hop on the train, no more using handicapped spaces to store the bike, searching for room here and there for the full size.

if you're in or near a big city, check the local craigslist, people sell them all the time, reasonably cheap.