Keikyu Main Line
KK
An N1000 series EMU on the Keikyu Main Line in July 2021
Overview
Native name	京急本線
Owner	Keikyu
Locale	Kanagawa Prefecture Tokyo
Termini	Shinagawa Uraga
Stations	50
Service
System	Keikyu
Depot(s)	Kanazawa-Bunko
Daily ridership	1,129,320 (daily, FY2010)[1]
History
Opened	1 February 1901 (1901-02-01) (As Shonan Electric Railway)
Technical
Number of tracks	Double-track Triple-track (Koyasu—Kanagawa-shimmachi)
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Electrification	1,500 V DC (overhead line)
Operating speed	120 km/h (75 mph)
Signalling	Automatic closed block
Train protection system	C-ATS
Route map -1.2 Sengakuji Toei Asakusa Line 0.0 Shinagawa Takanawa (abandoned in 1933) Yamanote, Yokosuka lines Tōkaidō Main, Keihin-Tohoku lines Tokaido Shinkansen 0.7 Kitashinagawa Kita-Bamba merged to Shimbamba 1.4 Shimbamba Minami-Bamba merged to Shimbamba 2.2 Aomono-yokochō Rinkai Line 2.7 Samezu Hamakawa abandoned in 1944 3.5 Tachiaigawa Suzugamori abandoned in 1944 4.8 Ōmorikaigan Ōmori Branch Line Ōmori-Teishajō-mae Ōmori Ōmori Hachiman abandoned in 1944 5.7 Heiwajima 6.5 Ōmorimachi 7.2 Umeyashiki 8.0 Keikyū Kamata Airport Line Haneda Airport station and airport Demura abandoned in 1949 9.4 Zōshiki 10.6 Rokugōdote Tama River: Tokyo/Kanagawa Daishi Line 11.8 Keikyū Kawasaki Kawasaki Tokaido Main Line freight branch 13.1 Hatchō-nawate JR-E: Nambu Line Tokaido Main Line freight line 13.8 Tsurumi-ichiba Yokosuka Line 15.3 Keikyū Tsurumi Tsurumi Sōjiji abandoned in 1944 Kaigan Electric Tramway Tsurumi Line 16.1 Kagetsuen-mae 16.9 Namamugi "Takashima Line" (freight) Kirin abandoned in 1949 18.3 Keikyū Shinkoyasu Shin-Koyasu 19.3 Koyasu Yokohama Line Kanagawa-shimmachi Shimmachi depot 20.5 Keikyū Higashi-kanagawa Higashi-Kanagawa 21.5 Kanagawa Tokyu Toyoko Line 22.2 Yokohama Minatomirai Line Yokohama City Subway:Blue Line Sotetsu Main Line Negishi Line Tokaido Main, Yokosuka lines Hiranuma abandoned in 1944 23.4 Tobe 24.8 Hinodechō 25.6 Koganechō 26.5 Minamiōta 27.7 Idogaya 29.1 Gumyōji Yokohama Subway Blue Line 30.8 Kamiōoka 33.0 Byōbugaura 34.3 Sugita Negishi Line 36.7 Keikyū Tomioka 37.4 Nōkendai 39.5 Kanazawa-bunko Tokyu Car Corporation Kanazawa depot 40.9 Kanazawa-hakkei Kanazawa Seaside Line Keikyu Zushi Line Zushi·Hayama 42.8 Oppama 44.5 Keikyū Taura Yokosuka Line 47.1 Anjinzuka 48.1 Hemi Yokosuka Yokosuka Line 49.2 Shioiri 49.9 Yokosuka-chūō 51.1 Kenritsudaigaku 52.3 Horinouchi Keikyu Kurihama Line Misakiguchi 53.1 Keikyū Ōtsu 54.2 Maborikaigan 55.5 Uraga Through train destinations beyond Sengakuji Shibayama Railway Shibayama-Chiyoda Narita Airport station and airport Keisei Higashi-Narita Line Station Inba Nihon-idai Keisei Narita Airport Line Hokuso Line Keisei Main Line Toei Asakusa Line, Keisei Oshiage Line Sengakuji

The Keikyu Main Line (京急本線, Keikyū-honsen) is a railway line in Japan, operated by the private railway operator Keikyu. The line connects the Tokyo wards of Minato, Shinagawa, Ōta, and the Kanagawa municipalities of Kawasaki, Yokohama and Yokosuka. The Keikyu Main Line began as a short 2 km (1.2 mi) line in 1895. By 1905 it was extended from Shinagawa Station in Tokyo to central Yokohama, becoming a major interurban line between the two cities.

Service types

Keikyu operates the following different types of service, including all-stations "Local" trains.^[2]

Abbreviations:

•   Lo = Local (普通, Futsū): Stops at all stations
•   Exp = Express (急行, Kyūkō)

  (1) between Sengakuji and Haneda Airport Terminal 1·2 (mornings and evenings only)

  (2) between Zushi·Hayama and Haneda Airport Terminal 1·2

•   TLE = TOKKYŪ Limited Express (特急, Tokkyū)
•   KLE = KAITOKU Limited Express (快特, Kaitoku)
•   ALE = Airport Limited Express (エアポート快特, Eapōto Kaitoku)
•   EW = Evening Wing (イブニング・ウィング号, Ibuningu-Uingu-gō): A "Home Liner" service with an additional charge for seat reservation. Operates only on weekday evenings from Shinagawa to Misakiguchi on the Keikyu Kurihama Line.
•   MW = Morning Wing (モーニング・ウィング号, Mōningu-Uingu-gō): A "Home Liner" service with an additional charge for seat reservation. Operates only on weekday mornings from Miurakaigan on the Keikyu Kurihama Line to Shinagawa and Sengakuji.

Stations

For connections and distances, see the route diagram.

No.	Name	Japanese	Lo	Exp		TLE	KLE	ALE	EW	MW	Transfers	Location
↑ Through-running via the A Toei Asakusa Line and KS Keisei Oshiage Line to/from ↑ Narita Airport Terminal 1 via the KS Keisei Main Line Narita Airport Terminal 1 via the KS Keisei Main Line and KS Narita Sky Access Line Imba-Nihon-Idai via the KS Keisei Main Line and HS Hokusō Line
A07	Sengakuji	泉岳寺	O	O		O	O	O		O	A Toei Asakusa Line (through service) JY Yamanote Line (Takanawa Gateway) JK Keihin-Tohoku Line (Takanawa Gateway)	Minato, Tokyo
KK01	Shinagawa	品川	O	O		O	O	O	O	O	■ Tokaido Shinkansen JT Tōkaidō Main Line JY Yamanote Line JK Keihin-Tōhoku Line JO Yokosuka Line
KK02	Kitashinagawa	北品川	O	|		|	|	|	↓	↑		Shinagawa, Tokyo
KK03	Shimbamba	新馬場	O	|		|	|	|	↓	↑
KK04	Aomono-yokochō	青物横丁	O	O		O	|	|	↓	↑
KK05	Samezu	鮫洲	O	|		|	|	|	↓	↑
KK06	Tachiaigawa	立会川	O	O		|	|	|	↓	↑
KK07	Ōmorikaigan	大森海岸	O	|		|	|	|	↓	↑
KK08	Heiwajima	平和島	O	O		O	|	|	↓	↑		Ōta, Tokyo
KK09	Ōmorimachi	大森町	O	|		|	|	|	↓	↑
KK10	Umeyashiki	梅屋敷	O	|		|	|	|	↓	↑
KK11	Keikyū Kamata	京急蒲田	O	O	O	O	O	|	↓	↑	KK Keikyū Airport Line (through service)
KK18	Zōshiki	雑色	O		|	|	|		↓	↑
KK19	Rokugōdote	六郷土手	O		|	|	|		↓	↑
KK20	Keikyū Kawasaki	京急川崎	O		O	O	O		↓	↑	KK Keikyū Daishi Line JT Tōkaidō Main Line JK Keihin-Tōhoku Line JN Nambu Line	Kawasaki-ku, Kawasaki, Kanagawa
KK27	Hatchō-nawate	八丁畷	O		|	|	|		↓	↑	JN Nambu Branch Line
KK28	Tsurumi-ichiba	鶴見市場	O		|	|	|		↓	↑		Tsurumi-ku, Yokohama, Kanagawa
KK29	Keikyū Tsurumi	京急鶴見	O		O	|	|		↓	↑	JK Keihin-Tōhoku Line JI Tsurumi Line
KK30	Kagetsu-sōjiji	花月総持寺	O		|	|	|		↓	↑
KK31	Namamugi	生麦	O		|	|	|		↓	↑
KK32	Keikyū Shinkoyasu	京急新子安	O		|	|	|		↓	↑		Kanagawa-ku, Yokohama, Kanagawa
KK33	Koyasu	子安	O		|	|	|		↓	↑
KK34	Kanagawa-shimmachi	神奈川新町	O		O	O	|		↓	↑
KK35	Keikyū Higashi-kanagawa	京急東神奈川	O		O	|	|		↓	↑	JK Keihin-Tōhoku Line JH Yokohama Line
KK36	Kanagawa	神奈川	O		|	|	|		↓	↑
KK37	Yokohama	横浜	O		O	O	O		↓	↑	JT Tōkaidō Main Line JK Keihin-Tōhoku Line JK Negishi Line JO Yokosuka Line JS Shōnan-Shinjuku Line TY Tokyu Toyoko Line Minatomirai Line Sotetsu Main Line Yokohama Subway Blue Line	Nishi-ku, Yokohama, Kanagawa
KK38	Tobe	戸部	O		|	|	|		↓	↑
KK39	Hinodechō	日ノ出町	O		O	|	|		↓	↑		Naka-ku, Yokohama, Kanagawa
KK40	Koganechō	黄金町	O		|	|	|		↓	↑		Minami-ku, Yokohama, Kanagawa
KK41	Minamiōta	南太田	O		|	|	|		↓	↑
KK42	Idogaya	井土ヶ谷	O		O	|	|		↓	↑
KK43	Gumyōji	弘明寺	O		O	|	|		↓	↑
KK44	Kamiōoka	上大岡	O		O	O	O		O	O	Yokohama Subway Blue Line	Kōnan-ku, Yokohama
KK45	Byōbugaura	屏風浦	O		|	|	|		↓	↑		Isogo-ku, Yokohama, Kanagawa
KK46	Sugita	杉田	O		O	|	|		↓	↑
KK47	Keikyū Tomioka	京急富岡	O		|	|	|		↓	↑		Kanazawa-ku, Yokohama, Kanagawa
KK48	Nōkendai	能見台	O		O	|	|		↓	↑
KK49	Kanazawa-bunko	金沢文庫	O		O	O	O		O	O
KK50	Kanazawa-hakkei	金沢八景	O		O	O	O		O	↑	KK Keikyu Zushi Line (through service) Kanazawa Seaside Line
KK54	Oppama	追浜	O			O	|		↓	↑		Yokosuka, Kanagawa
KK55	Keikyū Taura	京急田浦	O			|	|		↓	↑
KK56	Anjinzuka	安針塚	O			|	|		↓	↑
KK57	Hemi	逸見	O			|	|		↓	↑
KK58	Shioiri	汐入	O			O	|		↓	↑
KK59	Yokosuka-chūō	横須賀中央	O			O	O		O	O
KK60	Kenritsudaigaku	県立大学	O			|	|		↓	↑
KK61	Horinouchi	堀ノ内	O			O	O		O	↑	KK Keikyu Kurihama Line (through service)
KK62	Keikyū Ōtsu	京急大津	O			O
KK63	Maborikaigan	馬堀海岸	O			O
KK64	Uraga	浦賀	O			O

History

All sections of the line were built as dual track. The Keihin Railway opened the Kawasaki to Omori section in 1901 as a 1,435 mm (4 ft 8+1⁄2 in) gauge line electrified at 600 V DC. In 1904, the line was regauged to 1,372 mm (4 ft 6 in) and extended to Shinagawa.

In 1930, the Shonan Electric Railway opened the Uraga to Koganecho section as a 1,435 mm (4 ft 8+1⁄2 in) gauge line electrified at 1,500 V DC. In 1931, the line from Yokohama was extended to connect at Koganecho. Freight services ceased in 1932, the line was regauged to 1,435 mm (4 ft 8+1⁄2 in) the following year, and in 1936, the voltage on the Shonan line was reduced to 600 V DC.

In 1941, the Shonan Electric Railway merged with the Keihin Railway, which merged with Tokyu the following year. The voltage on the entire line was raised to 1,500 V DC in 1945, and in 1948, the Keihin Electric Railway was created to operate the railway.

In October 2012 the section between Heiwajima and Rokugōdote stations was elevated to remove a number of at grade crossings. Keikyū Kamata Station was rebuilt as a new complex dual level junction to connect the Mainline with the Airport Line.^[3][4][5] Elevation of the section between Shinagawa and Shimbamba, including a rebuilding of the Kitashinagawa station, is underway as of 2023, due to be completed in 2029.

From the start of the revised weekday timetable on 7 December 2015, two Morning Wing limited-stop commuter services from Miurakaigan on the Keikyu Kurihama Line to Shinagawa and Sengakuji in Tokyo were introduced. These stop at Yokosuka-chuo, Kanazawa-Bunko, and Kamiōoka en route.^[6]

From the timetable revision effective 25 November 2023, all "Airport Express" services were renamed to "Express" while abandoning the airplane symbology used on these services.^[7]

Accidents

On 7 April 1997, at about 2:47 pm, the first three cars of a four-car train derailed after colliding with a mudslide, resulting in 22 people injured. The accident occurred between Keikyū Taura and Anjinzuka stations, with approximately 60 people on board. Heavy rains caused the mudslide, 7 months after a report by the train company to the Transportation Minister that there was little probability of such an occurrence in that area. 500 workers were mobilized as the train service was temporarily suspended between Kanazawa-Hakkei and Horinouchi stations.^[8]

On 24 November 2000, at about 5:20 am, the front car of a four-car train derailed after a truck collided with the first car of the train at a level crossing, resulting in injuries to three passengers. The accident occurred in Yokosuka, and the approximately 100 commuters on board later walked about 200 m to the nearest station to continue their journeys via bus. The driver of the truck reported his foot became stuck between the accelerator and brake pedals, sending him through the crossing bar and into the crossing. Normal operations continued about 4 hours later that morning.^[9]

On 24 September 2012, at about 11:58 pm, the first three cars of an eight-car train derailed after colliding with a mudslide, resulting in injuries to 28 people including the train driver. Seven men and women were seriously injured, including fractures, broken ribs and pelvises. The accident occurred between Oppama and Keikyū Taura stations, between Yokohama and Yokosuka, with approximately 700 passengers on board. Heavy rains caused the mudslide, sweeping away safety nets that had been installed in 1998, the year after a similar mudslide in the area.^[10] An area of soil about 12 metres high and 15 metres wide fell onto the tracks, bringing trees and fencing structures with it. The train was travelling at 75 km/h (47 mph) before the driver applied the brakes, 30 to 40 m (98 to 131 ft) before the mudslide.^[11] Train services were temporarily suspended between Kanazawa-Hakkei and Hemi stations and temporary bus services were provided by the train company until normal operations resumed approximately 55 hours later after the assessment and clean-up process.^[12] The train was scrapped in the aftermath.

On 18 April 2013, at about 4:30 pm, two window panes shattered in the front car of a commuter train while passing an express train going the opposite direction, resulting in minor lacerations to two high school students sitting with their backs to the windows. One window pane was also cracked on the passing train with no injuries. The accident occurred between Keikyu Taura and Anjinzuka stations, with approximately 30 people in the car at the time of the accident.^[13]

On 5 September 2019 at 11:43 am,^[14] a rapid limited express (Aoto on the Keisei Oshiage Line to Misakiguchi)^[15][16] collided with a truck and derailed at a level crossing between Kanagawa-shimmachi and Nakakido (now; Keikyū Higashi-Kanagawa) Stations in Yokohama's Kanagawa Ward. The truck driver, identified as 67-year-old Michio Motohashi, was killed. 35 others were injured.^[17] According to the police and other reports, Motohashi was driving fruits from Yokohama to Narita and got stuck on the level crossing after attempting a right turn from a narrow side road that was not part of his normal route.^[17] Police were also investigating to see if the train operator correctly applied the brakes.^[17] Trains were suspended between Keikyū Kawasaki and Kamiōoka Stations until the afternoon of 7 September.^[18][19] The train was scrapped in the aftermath.

Gallery

• 
  Between Shinagawa Station and Kitashinagawa Station
• 
  Between Yokohama Station and Tobe Station as seen from the former Hiranuma Station
• 
  Between Nōkendai Station and Kanazawa-bunko Station
• 
  At Hemi Station
• 
  Between Yokosuka-chūō Station and Kenritsudaigaku Station
• 
  At Uraga Station

See also

• List of railway lines in Japan

References

This article incorporates material from the corresponding article in the Japanese Wikipedia.

External links

• Keikyu website (in Japanese)