How would you name an amenity pay and disply parking machine amenity=coupon_parking? Or ist there already an existing amenity?

Good Q! I havent bothered to put the actual machines in for pay and display parking, you’re ok with the rest of the amenity=parking stuff though, right? Ive seen (Im sure I saw) parking being marked as pay and display generally for the area, just off Trafalgar Road in Greenwich somewhere, but never seen the machines marked specifically.