A device for automatically controlling vehicle speed, including a processor adapted to receive at least a first signal indicative of a first local required speed, a second signal indicative of a second local required speed received after the first signal, and a third signal indicative of a value of a current set vehicle speed, wherein the processor includes logic to (i) automatically determine a new set vehicle speed based at least on the first local required speed, the second local required speed, and the current set vehicle speed; and (ii) automatically initiate output of a signal to a vehicle speed controller to change the vehicle speed to a new set vehicle speed.