US Patent 10449970 Vehicle control system

A vehicle control system is configured to switch a driving mode of a vehicle among an automatic driving mode, a transition mode, and a manual driving mode. The vehicle control system includes: a notification device and an electronic control unit. The notification device is configured to notify the driver of information. The electronic control unit is configured to recognize a vehicle state of the vehicle, and notify, by using the notification device, the driver of a reason for switching the driving mode to the transition mode, when the driving mode is switched from the automatic driving mode or the manual driving mode to the transition mode based on the vehicle state.