후쿠오카 시 교통국
The is a subway line, part of the Fukuoka City Subway system in Fukuoka, Japan. It connects Meinohama, Nishi Ward to Fukuokakūkō (Fukuoka Airport), Hakata Ward, all within Fukuoka. The line's color on maps is orange. Officially, the line is called . The line has a through service with JR Chikuhi Line. Like other Fukuoka City Subway lines, stations are equipped with automatic platform gates, and trains are automatically operated by ATO system. However, JR train cars (from Chikuhi Line) are operated manually.