|Sanyo Electric Railway Main Line|
|Owner||Sanyo Electric Railway|
|Termini|| Nishidai |
|Line length||54.7 km (34.0 mi)|
|Number of tracks||2|
|Track gauge||1,435 mm (4 ft 8+1⁄2 in)|
|Minimum radius||160 m|
|Electrification||1,500 V DC, overhead catenary|
|Operating speed||110 km/h (70 mph) |
The Sanyo Electric Railway Main Line (山陽電気鉄道本線, Sanyō Denki Tetsudō Honsen) is a railway line in Japan operated by the private railway operator Sanyo Electric Railway. It stretches from Kobe west to Himeji via Akashi, Kakogawa and other municipalities in Hyōgo Prefecture. The line runs parallel to West Japan Railway Company (JR West) JR Kobe Line, with closest sections between Sanyo Suma and Sanyo Akashi stations, and competes with the JR line for its entire stretch. Despite the name, no part of the line is located in the San’yō region.
Nishidai is nominal as the start of the line, thus all trains of Sanyo start or end beyond, in Kobe Rapid Railway, or further Hanshin stations, namely Sannomiya stations on Hankyū's Kobe Main Line and on Hanshin's Main Line for Locals, Umeda terminal of Hanshin in Osaka.
The line accepts trains of Hanshin via Kobe Rapid, down (west) to Sumaura-kōen. In the Sanyo Main Line, all Hanshin trains stop all stations on their way, though in Hanshin's Main Line some are operated as Locals and some as Limited Express.
|Hanshin Ltd. Exp.||S Ltd. Exp.||Direct Ltd. Exp.||Sanyo Ltd. Exp.||City / Town|
|Through services:||from Nishidai to Hanshin Kobe Kosoku Line: |
|Nishidai||西代||0.0||●||●||▲||Hanshin Kobe Kosoku Line (through service)||Nagata-ku, Kōbe|
|SY 02||Itayado||板宿||1.0||●||●||●||Kobe Municipal Subway Seishin-Yamate Line||Suma-ku, Kōbe|
|SY 06||Sanyo Suma||山陽須磨||3.7||●||●||●||Sanyo Main Line (JR Kobe Line) (Suma Station, JR-A68)|
|SY 07||Sumaura-kōen||須磨浦公園||5.1||●||｜||｜||Sumaura Ropeway|
|SY 08||Sanyo Shioya||山陽塩屋||6.8||｜||｜||Sanyo Main Line (JR Kobe Line) (Shioya Station, JR-A69)||Tarumi-ku, Kōbe|
|SY 11||Sanyo Tarumi||山陽垂水||9.6||●||●||Sanyo Main Line (JR Kobe Line) (Tarumi Station, JR-A70)|
|SY 13||Maiko-kōen||舞子公園||11.5||｜||●||Sanyo Main Line (JR Kobe Line) (Maiko Station, JR-A71)|
|SY 17||Sanyo Akashi||山陽明石||15.7||●||●||Sanyo Main Line (JR Kobe Line) (Akashi Station, JR-A73)|
|SY 24||Sanyo Uozumi||山陽魚住||25.6||｜||｜|
|SY 27||Harimachō||播磨町||29.9||●||｜||｜||Harima, Kako District|
|SY 34||Sanyo Sone||山陽曽根||41.3||●||｜||｜|
|SY 40||Shikama||飾磨||50.9||●||●||●||Aboshi Line|
|SY 43||Sanyo Himeji||山陽姫路||54.7||●||●||●||JR West (Himeji Station)|
The Hyogo Electric Tramway (兵庫電気軌道) opened the section from the Hyogo Electric Railway Station (since closed) to Sanyo Suma on 15 March 1910 as 1,435 mm (4 ft 8+1⁄2 in) standard gauge , dual track electrified at 600 V DC. All subsequent extensions were electrified dual track. The line was extended to Akashi in 1917. 
In 1923, the Kobe Electric Railway opened the Akashi to Himeji section, and merged with the Hyogo Electric Railway in 1927. The Sanyo Electric Railway was created in 1934.[ citation needed ]
The line voltage was increased to 1,500 V DC in 1948. In 1968, the Higashi Suma to Hyogo Electric Railway Station section was closed and the line was connected to the Hanshin Main Line, enabling through services to Umeda in Osaka.[ citation needed ]
Station numbering was introduced on Sanyo Electric Railway lines from 1 April 2014, with Main Line stations numbered SY01 to SY43. 
On 12 February 2013, at around 15:50, a non-stop 6-car limited express service bound for Umeda collided with the rear end of a truck which was protruding onto a level crossing to the west of Arai Station. The first two cars of the train derailed and slid 170 m before hitting the edge of the station platform and coming to rest. 15 people were injured in the collision, including the train driver and truck driver.  
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