If I have a residential parking permit, do I still need to display it?

If the parking operator (in your case - the municipality / university) where your permit was issued is operating the CellOPark system AND is using CellOPark Permit management system (vPermit), then the answer is no. Your licence plate number is registered with our database and becomes your permit to park wherever you are entitled to do so. However, you must check that with the parking operator.