| Sōtetsu Main Line | |
| Native Name: | 相鉄本線 |
| Native Name Lang: | ja |
| Color: | 041452 |
| Type: | Commuter rail |
| Locale: | Kanagawa Prefecture |
| Stations: | 18 |
| Daily Ridership: | 566,657 (FY2010)[1] |
| Open: | 12 May 1926 |
| Owner: | Sagami Railway (Sotetsu) |
| Depot: | Kashiwadai Station |
| Linelength: | 24.6km (15.3miles) |
| Electrification: | 1,500 V DC overhead catenary |
| Speed: | 100km/h |
| Map State: | collapsed |
The is a railway line in Kanagawa Prefecture, Japan, operated by the private railway operator Sagami Railway (Sotetsu). It connects and .
Services on the Main Line are divided into four categories. Some trains travel along the Izumino Line west of to .
| No. | Station | Japanese | Distance (km) | Rapid | Comm. Exp. | Ltd. Exp. Comm. Ltd. Exp. | Transfers | Location | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Between Stations | Total | ||||||||||||
| 横浜 | 0.0 | 0.0 | ● | ● | ● | Tokaido Main Line Keihin-Tōhoku Line Yokohama Line Negishi Line Yokosuka Line Shonan-Shinjuku Line Tōkyū Tōyoko Line Keikyū Main Line Yokohama Municipal Subway Blue Line Minatomirai Line | Nishi-ku, Yokohama | ||||||
| 平沼橋 | 0.9 | 0.9 | |! style="background-color: lightcoral; " |↑! style="background-color: orange; " || | ||||||||||
| 西横浜 | 0.9 | 1.8 | |! style="background-color: lightcoral; " |↑! style="background-color: orange; " || | ||||||||||
| 天王町 | 0.6 | 2.4 | |! style="background-color: lightcoral; " |↑! style="background-color: orange; " || | Hodogaya-ku, Yokohama | |||||||||
| 星川 | 0.9 | 3.3 | ● | ↑ | |||-!||和田町| style="text-align:right" |1.0| style="text-align:right" |4.3! style="background-color: cornflowerblue; " || | ↑ | |||-!||上星川| style="text-align:right" |0.7| style="text-align:right" |5.0! style="text-align; center; background-color: cornflowerblue; " || | ↑ | |||-! colspan="5" |Upbound through services| colspan="5" | Sōtetsu Shin-yokohama Line Sōtetsu–JR Direct Line from to Tōkyū Shin-yokohama Line from to Tōkyū Meguro Line for Toei Subway for Tokyo Metro for for Tōkyū for Tokyo Metro for Tōbu Tōjō Line for |-!||西谷| style="text-align:right" |1.9| style="text-align:right" |6.9! style="text-align; center; background-color: cornflowerblue; " |●! style="text-align; center; background-color: lightcoral; " |●! style="text-align; center; background-color: orange; " |●| Sōtetsu Shin-yokohama Line|Hodogaya-ku|-!||鶴ヶ峰| style="text-align:right" |1.6| style="text-align:right" |8.5! style="text-align; center; background-color: cornflowerblue; " |●! style="text-align; center; background-color: lightcoral; " |●! style="text-align; center; background-color: orange; "|▲|| rowspan="2" |Asahi-ku, Yokohama|-!||二俣川| style="text-align:right" |2.0| style="text-align:right" |10.5! style="background-color: cornflowerblue; " |●! style="background-color: lightcoral; " |●! style="background-color: orange; " |●| Izumino Line|-! colspan="5" |Downbound through service| colspan="5" | Izumino Line for |-!||希望ヶ丘| style="text-align:right" |1.7| style="text-align:right" |12.2! style="background-color: cornflowerblue; " |●! style="background-color: lightcoral; " |●! style="background-color: orange; " || | Asahi-ku | |||
| 三ツ境 | 1.4 | 13.6 | ● | ● | ||| rowspan="2" |Seya-ku, Yokohama|-!||瀬谷| style="text-align:right" |1.9| style="text-align:right" |15.5! style="background-color: cornflowerblue; " |●! style="background-color: lightcoral; " |●! style="background-color: orange; " || | ||||||||
| 大和 | 1.9 | 17.4 | ● | ● | ● | Odakyu Enoshima Line | Yamato | ||||||
| 相模大塚 | 1.9 | 19.3 | ● | ● | |||-!||さがみ野| style="text-align:right" |1.2| style="text-align:right" |20.5! style="background-color: cornflowerblue; " |●! style="background-color: lightcoral; " |●! style="background-color: orange; " |||| rowspan="3" |Ebina|-!||かしわ台| style="text-align:right" |1.3| style="text-align:right" |21.8! style="background-color: cornflowerblue; " |●! style="background-color: lightcoral; " |●! style="background-color: orange; " || | ||||||||
| 海老名 | 2.8 | 24.6 | ● | ● | ● | Odakyu Odawara Line ■ Sagami Line | |||||||
Sotetsu[2]
JR East
Tokyu
The line opened on 12 May 1926 as the steam-operated between Futamata-gawa and (on the present-day Sagami Line).[6] The line was extended from Futamata-gawa to Yokohama in December 1933, and from the former station at (now closed) in November 1941.[6]
The line became the from 1 April 1943.[6] However, when the line was commissioned to Tōkyū due to the financial difficulties of the Sagami Railway, it was renamed as the "Tōkyū Atsugi Line" (東急厚木線) until the end of the commission in 1947.
Work to electrify the line commenced in June 1942, with the entire line between Yokohama and Ebina electrified by 20 September 1944.[6]
Work to double-track the line commenced in January 1957 between Yokohama and Nishi-Yokohama. The entire line was double-tracked by March 1974.[6]
The first air-conditioned trains (4-car 6000 series EMUs) were introduced on the line on 3 July 1971.[6]
10-car trains started operating on the line from 6 April 1981.[6]
Station ticket barriers were modified to allow use of the Passnet magnetic farecard from 1 October 2000.[6]
There was a short spur line which branched from Sagamino Station to the Naval Air Facility Atsugi air base. While the track remains in place up to the fence of the base, the line is no longer in use.
In order to improve safety and efficiency, a 2.8km (01.7miles) section around Tsurugamine Station is being transitioned to an underground structure.[7] The underground track section and new station building is expected to be completed in 2034.
On a side note, what is known today as the Sagami Line had been constructed and owned by Sōtetsu, until 1944 when it was acquired by the government during World War II. After the war, the government and Sōtetsu never reached any agreement to return the line to Sōtetsu, and today it is run by JR East.
See main article: Sōtetsu Shin-yokohama Line. The Sōtetsu Shin-yokohama Line connects Nishiya to Hazawa Yokohama-Kokudai, and further to the Tōkyū Shin-yokohama Line. Through service to the Saikyō Line began on 30 November 2019 while services to the Tōkyū Shin-Yokohama Line began on 18 March 2023.[8]
With the opening of this new line, Limited Express and Rapid services make a stop at Nishiya, which facilitates transfer between services to central Yokohama and the Tokyo Metropolis.
In addition, two new service types will be implemented.[9] They are the Commuter Limited Express (通勤特急) and Commuter Express (通勤急行) services, which both operate through services from / to the Izumino Line. The former service will replace the current Express on the Izumino Line, and will make additional stops at Nishiya and Tsurugamine. The latter service is a brand new service, making stops at all stations west of Nishiya.[10]