a driver posture detecting circuitry that detects a posture of a driver based on a driver head portion position output from a driver head portion position detecting device;

a vehicle pushing intention determining circuitry that determines, based on a detected value obtained by the driver posture detecting circuitry, that there is a state wherein a vehicle is being pushed by the driver, and outputs a vehicle pushing command value;

a target vehicle pushing assistance vehicle speed calculating circuitry that calculates a target vehicle pushing assistance vehicle speed by converting the vehicle pushing command value;

a vehicle pushing assistance permission determining circuitry that determines whether vehicle pushing assistance can be implemented based on the posture of the driver and a state of the vehicle, and outputs a vehicle pushing assistance permission determination; and

a vehicle pushing assistance circuitry that calculates, from the target vehicle pushing assistance vehicle speed and the vehicle pushing assistance permission determination, a controlled variable for a vehicle power source that assists vehicle pushing, and outputs the controlled variable,

wherein the vehicle pushing intention determining circuitry calculates the vehicle pushing command value to be a value greater than zero based on the detected value obtained by the driver posture detecting circuitry exceeding an advancement intention threshold and a speed of the vehicle in a forward direction being equal to or greater than a forward vehicle pushing implementation vehicle speed, and calculates the vehicle pushing command value to be a value less than zero based on the detected value obtained by the driver posture detecting circuitry being less than a reversing intention threshold and a speed of the vehicle in a backward direction being equal to or greater than a backward vehicle pushing implementation vehicle speed.