VEHICLE TRAVEL CONTROL DEVICE, AND VEHICLE TRAVEL CONTROL SYSTEM

A vehicle travel control device capable of improving fuel consumption suppression by preferentially acquiring vehicle information indicating a deceleration cause has occurred ahead of a host vehicle, and rapidly stopping or suppressing the generation of a driving force. The present invention: determines a specific deceleration-causing vehicle, which impacts the travel of the host vehicle, by means of an acceleration/deceleration controller, on the basis of vehicle information corresponding to a plurality of deceleration-causing vehicles causing deceleration, and at least planned travel route information of the host vehicle; transmits vehicle-specifying information indicating the determined specific deceleration-causing vehicle to the data center, and acquires priority vehicle information pertaining to the specific deceleration-causing vehicle preferentially transmitted from the data center; and, on the basis of the preferentially-acquired priority vehicle information, determines driving force control information for the host vehicle and controls the state in which the driving force of the host vehicle is generated.