Abstract: A cooperative-vehicle system suitable to operate an automated vehicle in a courteous or cooperative manner includes an object-detector and a controller. The object-detector is used by the host-vehicle to detect an other-vehicle attempting to enter a travel-lane traveled by the host-vehicle. The controller is in communication with the object-detector. The controller is configured to control motion of the host-vehicle. The controller is also configured to adjust a present-vector of the host-vehicle to allow the other-vehicle to enter the travel-lane. The decision to take some action to allow the other vehicle to enter the travel-lane may be further based on secondary considerations such as how long the other-vehicle has waited, a classification of the other-vehicle (e.g. an ambulance), an assessment of how any action by the host-vehicle would affect nearby vehicles, the intent of the other-vehicle, and/or a measure traffic-density proximate to the host-vehicle.