A collaborative control system for a vehicle has a cloud server, a collaboration device, and an edge computing device. The cloud server stores road coordinates and traffic data corresponding to the road coordinates. The collaboration device is for being mounted in the vehicle. The edge computing device communicates with the cloud server and the collaboration device and is for being mounted in the vehicle. The edge computing device downloads one of the traffic data from the cloud server as an instant traffic datum according to a vehicle positioning coordinate corresponding to one of the road coordinates, and transmits the instant traffic datum to the collaboration device. The collaboration device displays the instant traffic datum.