Vehicle Controller

A vehicle controller disposed in an own vehicle, comprising:

• a follow travel instructor conducting a lead vehicle follow control by auto-steering the own vehicle to follow a lead vehicle;
• an other vehicle information obtainer obtaining transmitted information that includes front situation information that allows for a determination of whether it is likely for the lead vehicle to cross a traffic lane boundary to an opposite traffic lane, the transmitted information being transmittable from the lead vehicle via a vehicle-to-vehicle communication;
• and
• an across-boundary move determiner determining whether it is likely for the lead vehicle to cross the traffic lane boundary to the opposite traffic lane, based on the front situation information of the lead vehicle obtained by the other vehicle information obtainer, wherein
• the follow travel instructor stops conducting the lead vehicle follow control based on a determination by the across-boundary move determiner that it is likely for the lead vehicle to cross the traffic lane boundary.