an image capturing apparatus configured to capture vehicles parked in a plurality of parking spots in a parking lot, and to acquire license plate numbers of the vehicles and spot numbers of the parking spots;

a plurality of carts that are usable by customers who are occupants of the vehicles parked in the parking spots, the plurality of carts each including a cart terminal;

a display apparatus configured to display a parking state in the parking lot; and

a management apparatus configured to communicate with the image capturing apparatus, the cart terminal, and the display apparatus,

wherein the management apparatus

acquires, and stores as parking information, the license plate number and the spot number of the parking spot from the image capturing apparatus,

acquires, from the cart terminal, information that enables specification of the parking information of the vehicle of the customer using the cart and an identification number of the cart terminal, and stores the identification number of the cart terminal in association with the parking information,

detects return of the cart to a predetermined return location, and calculates a predicted time until the parking spot is freed up based on the predetermined return location and a location of the parking spot, and

updates display on the display apparatus based on the predicted time.