ELECTRONIC CONTROL DEVICE

Provided is an electronic control device that estimates a presence of a vehicle incapable of performing vehicle-to-vehicle communication ahead of a communication partner vehicle is estimated. An electronic control device detects, on map data, an intersection located ahead in a traveling direction of a host vehicle based on location data and the map data of the host vehicle , calculates a stop position (first position) where a communication partner vehicle is supposed to pass through or stop when the communication partner vehicle stops at the intersection , based on vehicle information of the communication partner vehicle that is traveling toward the intersection , and determines whether or not there is another vehicle ahead in the traveling direction of the communication partner vehicle , based on the stop position (first position) and an intersection area (second position ) set before the intersection