One-lane is a term used to describe a road or path that is only wide enough for one vehicle or person to pass through at a time. It is often used to refer to roads in rural areas, as well as paths and trails in parks and other outdoor areas. The term can also be used to describe a single lane of traffic on a highway or other major roadway. The term 'NARROW' is often used to describe one-lane roads, as they are typically much narrower than two-lane roads.