TASK MANAGEMENT DEVICE, SYSTEM, VEHICLE, AND TASK MANAGEMENT METHOD

A task management device includes a control unit that detects a deterioration of an internal environment of a vehicle as an environmental deterioration during a period in which the vehicle to be operated in a mode in accordance with an application is operated in a first mode, calculates a time required for maintenance of the internal environment of the vehicle in accordance with the detected environmental deterioration and determines whether the maintenance is completed by a mode switching time limit for switching the mode of the vehicle to a second mode that is different from the first mode, and executes operational control in accordance with a determination result obtained.