Abstract: A method of managing a centralized parking payment system (2), the system (2) including at least one pay and display machine (6) and a payment centralization server (4), the or each pay and display machine (6) permitting payment for parking spaces situated in a corresponding payment zone (44) and being capable of creating payment data for the parking spaces and of recording them in a payment transactions file, and each pay and display machine (6) communicating via a first connection (12) with the centralization server (4), is characterized in that it includes a nominal operating mode in which the or each pay and display machine (6) transmits the transaction file only when one of the transmission conditions, apart from the simple creation of payment data, is verified, in order to reduce its energy consumption.