Automatic parking system and automatic parking method

An automatic parking method for automatically parking a subject vehicle, the automatic parking method comprising steps of:

• determining a system ready mode and outputting information of “system activated” to a driver or operator;
• receiving an activation input from the driver or infrastructure;
• determining a slot search mode, outputting information of “searching for slots” to the driver or operator, and detecting by a sensor parking slots in consideration of a length and a width of the subject vehicle;
• determining a slot found mode and outputting information of “slot search results” to the driver or operator;
• determining a select slot mode, outputting information of at least one available slots, and receiving driver/operator input to select a slot for parking;
• determining an automated parking maneuver mode, calculating, a moving path between a current position of the subject vehicle and an optimal slot, automatically parking the subject vehicle in the optimal slot, wherein the subject vehicle is controlled by sensing spaced distances between the subject vehicle and the surrounding vehicles in the optimal slot, and outputting information of “system is controlling obstacles along the path” to the driver of operator.