Kosei Line

The is a commuter rail line in Osaka-Kobe-Kyoto Metropolitan Area, operated by West Japan Railway Company (JR West). The line was completed in 1974 by the former Japanese National Railways (JNR) to provide faster access from the Kansai region to the Hokuriku region. It originates at Yamashina Station in Yamashina-ku, Kyoto and ends at Ōmi-Shiotsu Station in Nagahama, Shiga.

Its name means "the line to the west of the lake," indicating that it approximately parallels the western shore of Biwako. Trains continue from Omi-Shiotsu Station to Tsuruga Station on the Hokuriku Main Line Yamashina to Kyoto Station on the Tōkaidō Main Line for convenient transfer to lines serving the Kansai as well as the Tōkaidō Shinkansen.

In addition to local, Rapid and Special Rapid services, limited express trains such as the ''Thunderbird'', as well as freight trains are frequently operated on the line. Only few of limited express trains stop at Katata or Omi-Imazu and others skip all stations on the line.

History

A direct Tsuruga – Kyoto line was included in the 1922 Railway Construction Act.

In the meantime, the Kojaku Railway Co. opened a line from Hamaotsu on the Keihan Ishiyama Sakamoto Line 51 km to Omi-Imazu between 1923 and 1929. Between 1947 and 1965 there was a connection between Zeze on the Tokaido Main Line and Hamaotsu, allowing direct connection to the Tokaido Line.

The line was purchase by JNR and closed in 1969 so the Kosei line could be constructed over parts of the alignment, with the entire new line opening in 1974 as a dual track electrified line with CTC signalling.

The section from Nagahara to Ōmi-Shiotsu, originally electrified with 20 kV AC, was re-electrified to 1,500 V DC on September 24, 2006 enabling DC-only EMUs used in Osaka-Kyoto region to operate, and the Special Rapid through train service from JR Kyoto Line ( Tokaido Main Line) was extended beyond Ōmi-Shiotsu to Tsuruga on the Hokuriku Main Line.

Services and stations

Legends:

*● : All trains stop
*○ : Only ''"Kosei Leisure (湖西レジャー)"'' extra seasonal service (in winter) makes stop at Shiga
*, : All trains skip

Local (普通) trains stop at all stations, but they do not operate through services to the JR Kyoto Line.

Rapid (快速) trains operate only in the mornings, which heads south to the JR Kyoto Line. 2 services are operated every weekday morning and 1 service is operated every weekend morning.

Special Rapid (新快速) trains operate one train per hour for both directions, throughout daytime.

Only 4-car trains are capable of going as far as Tsuruga at the moment, and the rear eight cars in a 12-car set are uncoupled at Omi-Imazu Station.

Rolling stock

Current

Passenger

=Local and Rapid

=
* 113 series (within the line and to Kyoto only)
* 117 series (same as above)
* 207 series
* 221 series (mostly through rapid services to the Tokaido Main Line and the Sanyo Main Line, also some operate as local)
* 223-6000 series (same as above)
* 321 series
* 521-0 series (only through services continuing to the Hokuriku Main Line)

=Special Rapid and Local

=
* 223-1000/2000 series
* 225-0/100 series

=Limited Express

=
* 681 series (''Thunderbird'' services)
* 683 series (''Thunderbird'' services)

Freight

* EF81
* EF510

Former

EMU

* 125 series (until March 2009)
* 201 series
* 419 series (until October 2006)
* 475 series (until October 2006)
* 485 series (''Raichō'' services, until March 2011)

DMU

* KiHa 20 series (until 1991)
* KiHa 26 series (until 1991)
* KiHa 48 (until 1991)

See also

* List of railway lines in Japan

References

{{West Japan Railway Company Lines

Lines of West Japan Railway Company
Railway lines opened in 1974
1067 mm gauge railways in Japan