Orange: Kūkō LineBlue: Hakozaki Line Green:Nanakuma Line The Fukuoka City Subway (福岡市地下鉄, Fukuoka-shi Chikatetsu) serves Fukuoka, Japan.

Length Visitors traveling to Fukuoka by Shinkansen (bullet train) disembark at JR Hakata Station.

[3] The symbol marks of Kūkō and Hakozaki Line stations were designed by Isao Nisijima [ja],[4] with those of Nanakuma Line stations being designed by his son Masayuki Nisijima, building on his father’s posthumous works.

Hayakaken is a rechargeable contactless smart card for the Fukuoka City Subway.

As of March 2013, it also became compatible with other major IC cards as part of the Nationwide Mutual Usage Service.