| 摘要 |
A data generation unit generates parking schedule data, which includes information on an expected arrival time of a vehicle at a parking lot, for each vehicle being due to arrive at the parking lot. An arrival time calculation unit calculates an expected arrival time of a first vehicle at a parking lot. An unoccupied state calculation unit calculates a predicted value of an unoccupied state of the parking lot at the expected arrival time of the first vehicle, according to a number of expected parked vehicles, each having an expected arrival time before the expected arrival time of the first vehicle, and a present number of unoccupied parking cells in the parking lot. A notification unit provides a notification to a user of the first vehicle according to the calculated predicted value.
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