VEHICLE CONTROLLER, VEHICLE CONTROL METHOD, AND VEHICLE CONTROL PROGRAM

The vehicle controller of the present disclosure acquires a preset operation route, and causes the vehicle to travel along the preset operation route in one of an autonomous driving mode and a manual driving mode. The autonomous driving mode is a mode in which the vehicle is operated by autonomous driving. The manual driving mode is a mode in which the vehicle is operated by manual driving in which at least steering is manually performed. The vehicle controller of the present disclosure generates steering torque in a direction of returning the vehicle to the preset operation route in response to detection of steering toward a road deviating from the preset operation route during operation in the manual driving mode.