Travelled-route selecting apparatus and method

A travelled-route selecting apparatus comprising:

• an other vehicle detecting means configured to detect other vehicles in front of an own vehicle;
• a route generating means configured to generate a travelled route of each of the other vehicles detected by the other vehicle detecting means;
• a first route selecting means configured to select, from the travelled routes of the other vehicles generated by the route generating means, one or more travelled routes, the one or more travelled routes each having a relative distance relative to the own vehicle equal to or lower than a predetermined threshold value;
• and
• a second route selecting means configured to select, from the travelled routes selected by the first route selecting means, a travelled route corresponding to a selected other vehicle, the selected other vehicle being the closest to the own vehicle among the other vehicles corresponding to the travelled routes selected by the first route selecting means.