交通 (kōtsū) means 'traffic' or 'transportation.' It refers to the movement of people and vehicles, and the systems used for travel. For example, '東京の交通はとても便利です' (Tokyo's transportation is very convenient) or '交通量が多い' (There is a lot of traffic).

「交通」は、人や乗り物の行き来のことです。例：「交通手段」