If you have a hangtag, you may change your car information online at www.upenn.edu/parking. You may also send an email to parking@upenn.edu, call 215-898-8667 or visit the Office of Parking & Commuter Services at 3401 Walnut Street, Suite 447A during business hours (Monday - Friday from 8:30 a.m. to 5:00 p.m.).