Refers to a bus that operates on a set schedule and route, as opposed to a chartered or on-demand bus. Common in public transportation contexts.
A fixed-route bus departs from in front of the station.
Does this transit bus go to the city hall?
路線バス is a regular public bus running a fixed municipal route, whereas シャトルバス is typically a free or dedicated service linking two specific locations like an airport and a hotel.
Compound of 路線 (route, line) and バス (bus), directly describing a bus that follows a set route.