check the parking lots. For that reason I never register mine because that also means I can park in "visitor parking." They are going to start charging for the main lots around campus and have farther lots where you can park and ride a bus for free to campus.
I just cheat the system though. If I can't find student parking right next to the area of campus I have to be, I just back into a faculty spot. As long as you have no license plate on the front, they will never catch you. Who said cheaters never win?