PROCESSING DEVICE

A processing device includes one or more processors and one or more memories coupled to the one or more processors. The one or more processors are configured to perform a process including: acquiring pattern information, which is information indicating an operation pattern of at least one traffic light that is present on a traveling route of a vehicle; predicting, based on the pattern information, a number of stops, which is a number of times the vehicle is to stop at the at least one traffic light; and predicting, based on the number of stops, a total consumption amount of an energy source of the vehicle in a case where the vehicle travels on the traveling route.