pay and display

Short definition from Wiktionary

Noun

1. 1
   A system used for regulating parking, in which the customer purchases a ticket from a machine and displays it on the dashboard or window of the vehicle.

Adjective

1. 1
   Describing a car park in which the motorist obtains a ticket (for a specified period) from a coin-operated machine and displays it in the car so it can be checked by a parking attendant.