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History

1920	Aug. 29	Establishment of the Tokyo Underground Railway Company
1925	Sep. 27	Start of construction on the section between Asakusa and Ueno by the Tokyo Underground Railway Company
1927	Dec. 30	Tokyo Underground Railway Company-opening of the first subway section between Asakusa and Ueno
1934	Jun. 21	Tokyo Underground Railway Company-opening of the section between Ginza and Shimbashi
1939	Sep. 16	Start of reciprocal through-service between Asakusa on the Tokyo Underground Railway Company Line and Shibuya on the Tokyo Rapid Railway Company
1941	Jul. 4	Establishment of the Teito Rapid Transit Authority
1951	Apr. 20	Start of construction of the Marunouchi Line section between Ikebukuro and Shinjuku
1953	Dec. 1	Formal Determination of TRTA line names (section between Asakusa and Shibuya named the Ginza Line, section between Ikebukuro and Shinjuku named the Marunouchi Line)
1954	Jan. 20	Opening of the Ikebukuro to Ochanomizu section of the Marunouchi Line
1959	Mar. 15	Opening of the Kasumigaseki to Shinjuku section of the Marunouchi Line (Completed the Ikebukuro to Shinjuku section of the Marunouchi Line)
1960	Mar. 1	Establishment of the new TRTA logo ( logo)
	Apr. 10	Starting publication of the PR magazine “Metro News”
1961	Mar. 28	Opening of the Minami-senju to Naka-okachimachi section of the Hibiya Line
1962	Mar. 23	Opening of the Nakano-fujimicho to Honancho section of the Ogikubo Line (Completed the Shinjuku to Ogikubo section of the Ogikubo Line)
	May. 31	Opening of the Kita-senju to Minami-senju section and the Naka-okachimachi to Ningyocho section of the Hibiya Line (Subway Line No. 2) Start of reciprocal through-service with the Tobu Isesaki Line (to Kita-koshigaya)
1964	Aug. 29	Opening of the Higashi-ginza to Kasumigaseki section of the Hibiya Line (Completed the Kita-senju to Naka-meguro section of the Hibiya Line)
		Start of reciprocal through-service with the Tokyu Toyoko Line (to Hiyoshi) Nishi-ginza was renamed Ginza
	Dec. 23	Opening of the Takadanobaba to Kudanshita section of the Tozai Line
1966	Oct. 1	Start of reciprocal through-service with the Tozai Line and the Chuo Line (to Ogikubo)
1969	Mar. 29	Opening of the Toyocho and Nishi-funabashi section of the Tozai Line (Completed the Nakano to Nishi-funabashi section of the Tozai Line)
	Apr. 8	Start of reciprocal through-service between Mitaka on the Chuo Line and Tsudanuma on the Sobu Line via the Tozai Line
	Dec. 20	Opening of the Kita-senju to Otemachi section of the Chiyoda Line TRTA’s operating kilometerage exceeds 100km
1971	Apr. 20	Opening of the Ayase to Kita-senju section of the Chiyoda Line
		Start of reciprocal through-service with the Joban Line (to Abiko)
	Jul. 1	Introduction of air conditioning at Ginza and Nihombashi Stations
1972	Apr. 1	Ogikubo Line was renamed the Marunouchi Line
1974	Oct. 30	Opening of the Ikebukuro to Ginza-itchome section of the Yurakucho Line
1978	Feb. 28	A tornado blows a Tozai Line train traveling on a bridge over the Arakawa and Nakagawa Rivers off the tracks (two carriages are overturned and one carriage is derailed)
	Mar. 31	Opening of the Yoyogi-koen to Yoyogi-uehara section of the Chiyoda Line (Completed the Ayase to Yoyogi-uehara section of the Chiyoda Line)
		Start of reciprocal through-service with the Odakyu Odawara Line (to Hon-atsugi)
	Aug. 1	Opening of the Shibuya to Aoyama-itchome section of the Hanzomon Line
		Start of reciprocal through-service with the Tokyu Shin-tamagawa Line (to Futako-tamagawaen)
1979	Dec. 20	Opening of the Ayase to Kita-ayase section of the Chiyoda Line
1986	Jul. 12	Opening of the Subway Museum
1987	Aug. 25	Opening of the Wakoshi to Eidan-narimasu section of the Yurakucho Line
		Start of reciprocal through-service with the Tobu Tojo Line (to Kawagoe-shi)
1988	Jan. 1	Prohibition of smoking on all station premises
	Jun. 1	Start of car air conditioning (Hibiya, Tozai, Chiyoda, Yurakucho and Hanzomon Lines)
	Jun. 8	Yurakucho Line between Shintomicho and Shin-kiba starts operations (completing the Yurakucho Line between Wako-shi and Shin-kiba stations)
	Nov. 22	Station shop “METROPIA No. 1” opened at Ueno station
1991	Nov. 29	Opening of the Komagome to Akabane-iwabuchi section of the Namboku Line
		Installation of platform screen doors at all stations on the Namboku Line
1993	Jul. 1	Posting of female station employees (eight employees in four station blocks)
1995	Mar. 30	“Subway Sarin Gas Atack”on the Marunouchi, Hibiya and Chiyoda Lines
1996	Mar. 26	Introduction of the stored fare (SF) system on all lines
	Apr. 27	Start of reciprocal through-service with the Toyo Kosoku Line (to Toyo-katsutadai)
	Jul. 19	Complete air conditioning inside cars on all lines
1997	Jan. 29	Two female conductors are employed on the Ginza Line for the first time since WWII
1998	Mar. 26	Start of reciprocal through-service with the Yurakucho Line and the Seibu Ikebukuro Line (to Hanno)
1999	Jan. 10	Tunnel Inspection System completed for inspecting walls inside the tunnel
	Jan. 25	License received to construct Line No. 13 between Ikebukuro and Shibuya (8.9 km)
	Mar. 26	Construction Headquarters is awarded ISO 14001 certification
2000	Mar. 8	Train derailment and collision that occurred at Naka-meguro Station on the Hibiya Line
	Sep. 26	Opening of the Meguro to Tameike-sanno section of the Namboku Line (Completed the Meguro to Akabane-iwabuchi section of the Namboku Line)
		Start of reciprocal through-service with the Tokyu Meguro Line (to Musashi-kosugi)
	Oct. 14	Introduction of “PASSNET” (the common pre-paid card system)
2001	Mar. 28	Start of reciprocal through-service with the Namboku Line and the Saitama Railway Line (to Urawa-misono)
2002	Feb. 15	Half-height platform doors are installed at the Chiyoda Line’s Kita-ayase and Ayase (Platform 0) stations
	Mar. 14	The first female driver appointed since WWII (began work on the Ginza Line)
	Mar. 23	Began “one-man operation” between Kita-ayase and Ayase on the Chiyoda Line
	Nov. 22	The Rolling Stock Department’s Nakano Rolling Stock Office is awarded ISO 9001:2000 certification for construction and improvement planning of subway cars
	Dec. 18	The special company law was promulgated and enforced (Law 188)
2003	Mar. 19	Opening of the Suitengumae to Oshiage section of the Hanzomon Line (Completed the Shibuya to Oshiage section of the Hanzomon Line)
		Start of reciprocal through-service with the Tobu Nikko Lines (to Minami-kurihashi)
2004	Feb. 20	The Construction Headquarters is awarded ISO 9001:2000 certification
2004 Apr.-	Apr. 1	Birth of Tokyo Metro Co., Ltd.
		Establishment of the Customer Relations Center
		Service Managers assigned to the Ginza, Ueno, and Nihombashi stations
		Trial introduction of a new sign system in Ginza and Otemachi stations
	Oct. 1	Establishment of Metro Fleur Co., Ltd.
	Oct. 20	Tokyo Metro begins providing wireless LAN service at its stations
2005	Jan. 11	Opening of “Comfort Hotel Tokyo Kiyosumi Shirakawa” – a business hotel at Kiyosumi-shirakawa
	Dec. 2	Opening of “Echika Omotesando” at Omote-sando station
2006	Apr. 3	Establishment of Metro Properties Co., Ltd.
	Jul. 13	Opening of “R&B Hotel Tokyo Toyocho” – a business hotel at Toyocho
2007	Feb. 3	Service commences on our new credit card, the Tokyo Metro To Me CARD
	Feb. 5	Establishment of Metro Ad Agency Co., Ltd.
		Establishment of Metro Rail Facilities Co., Ltd.
	Feb. 27	ISO 27001 certification obtained for “M’ips”, Tokyo Metro’s integrated core computer system
	Mar. 18	PASMO, a rechargeable stored value IC card, is launched and interoperability with Suica made possible
	May. 8	Tokyo Metro is awarded an official “mark of approval” as a family friendly employer
2008	Feb. 27	Foreign-language website “Welcome to Tokyo Metro” goes online
	Mar. 15	Romance Car MSE express service is extended directly onto the Chiyoda Line
	Apr. 11	AOYAMA M’s TOWER opens near Gaiemmae station
	Jun. 14	Opening of Fukutoshin Line (Wakoshi-Shibuya)