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