PARKING ASSISTANCE DEVICE, PARKING ASSISTANCE METHOD, AND COMPUTER-READABLE MEDIUM

A parking assistance device performs automatic travel of a vehicle based on teaching travel by a driver. In this regard, the parking assistance device learns a travel route for parking the vehicle in a parking position during the teaching travel, based on the teaching travel. The parking assistance device further performs an automatic travel based on the travel route. A first vehicle speed during the automatic travel is slower than a second vehicle speed during the teaching travel, the first vehicle speed during the automatic travel is slower than a threshold value for a vehicle speed during the automatic travel, and the threshold value for the vehicle speed during the automatic travel is a value of a speed slower than 10 km/h.