Hi!
Are you the last child amongst your siblings? or an only child? I do agree that a big window into the street is dangerous, especially if you are a woman (don't know if you are just specifying). However if it is into the student campus there is far less risks, although you might want to stay vigilant - never hurts, the other way does.Nonetheless, this is where you will spend the rest of the year, so your parents reaction is more about delaying you "leaving the nest" than protecting you. Take a step back: it is understandable! They love you and are afraid of you leaving. It also means the end of an era for them... Maybe if you tell them that you will come regularly (considering the fact that they are 30mn away) they might relax? For example, I dunno, tell them you will come back home for Sunday lunches (and stick to it). It helps them transition. Remember they are flawed humans too, see their weakness and help them the same way they probably did countless times before. So go ahead, put down your boundaries, show them that you are responsible enough to handle this new era but still reassure them that they are still important in your life, just in a different way...
Anyways that's just my thoughts, good luck!