Disk-parking is a system of allowing time-restricted free parking through display of a parking-disk or clock-disc showing the time at which the vehicle was parked. A patrolling parking attendant can inspect the disk to check whether payment is owed. The system is common in Europe.

Parking is the act of stopping and disengaging a vehicle and usually leaving it unoccupied. Parking on one or both sides of a road is often permitted, though sometimes with restrictions. Some buildings have parking facilities for use of the buildings' users. Countries and local governments have rules for design and use of parking spaces.