Driving lane detection device and driving lane detection method

A driving lane detection device mountable in a vehicle, comprising:

• an object detector that generates object data that is information relating to a distance from the vehicle to each of one or more objects, a direction from the vehicle to each of the one or more objects, and a movement direction of each of the one or more objects, based on one or more reflection waves that are a radar signal transmitted by a radar device and reflected by the one or more objects;
• a vehicle detector that detects each of the one or more objects as at least one of a parallel-running vehicle or an oncoming vehicle, based on the generated object data, the parallel-running vehicle being another vehicle that is running on a lane in a same direction as the vehicle and the oncoming vehicle being another vehicle that is running on a lane in an opposite direction to the vehicle;
• and
• a driving lane detector that detects a driving lane of the vehicle based on the distance from the vehicle to at least one of the detected parallel-running vehicle and the detected oncoming vehicle, the direction from the vehicle to at least one of the detected parallel-running vehicle and the detected oncoming vehicle, and lane information relating to at least one of lane widths and a number of lanes of a road on which the vehicle is running.