Tokaido Line

The Tokaido Line (東海道線, Tōkaidō-sen) is a rapid transit line in Limaru, operated by Emmaru Railways. The line runs from Flower Hill station on the Isle of Pelle to either Twyford station in Chiatung or Manseibashi station on Enshima. On maps, diagrams and signboards, the Tokaido Line is shown using the colour "coffee" (in fact, saddle brown) and its stations are given numbers with the prefix "TK".

Overview
The Tokaido Line is unusual as it is the only rail line classified as a metro that does not use any metro tracks. Tokaido Line trains through run onto the Quay Line to Pelle Junction and Pier Head, and onto mainlines in the northeast towards Takarazaki. The Tokaido Line tracks are also used by outbound trains from Emmaru Katsuragi station to places in the east and southeast such as King's Cross.

Services
The Tokaido Line is one of the few lines which express services run: trains regularly skip Emmaru West, Kyobashi, Kingston Park, Shinsei, and Otaki stations. It is also one of the two lines with double-length trains, the other being the Chiatung Line. This is due to the line's low frequency, with an average of 12 minutes between two services of the same speed and destination.

The Tokaido Line is also a branched line: the line is split into the Twyford and Manseibashi branches. All express trains terminate at Twyford, while local trains terminate at both termini.

Stations
Trains stop at stations marked "●", do not stop at those marked "｜", and do not pass through those marked "-".

Present
Trains are currently 3- or 6-car formations of 6-meter-long carriages. Due to the need for standardisation between lines, the Tokaido Line is planned to adopt new trains with the C Division format of 5-meter-long carriages, forming 4 and 8 car trains.
 * Emmaru Railways
 * Class C29
 * Class C30 (with Class C29 cabs)

Former

 * Emmaru Railways
 * Class C7
 * Class C13
 * Koigawa Railways
 * 10 Series
 * 20 Series
 * 30 Series
 * 60 Series

Future

 * Emmaru Railways
 * Classes C307/13 and C307/14

Lore
The Tokaido Line was opened on 18 September 1887 by Koigawa Railways between the now-defunct Sanjo station and Kamihama East station (now Hokuyo station). It ran a half-hourly service using 10 series steam locomotives and rakes, carrying passengers and freight along the coast of Yokohama.

In 1899, the Shichirigahama line was also built, complete with the branch line from Union to Manseibashi. The 20 series steam locomotives and rakes were introduced this year.

The line was soon expanded northwards to Otaki Waterfalls in 1901. In the south, the booming business of Washington Railways caused Koigawa Railways to abandon Sanjo station and extend the line westwards to Flower Hill with an intermediate stop at Washington Grand Central, the WR's main station, in 1906. The 30 series steam locomotives and rakes were introduced this year.

World War 1 came, and this put a halt to any line expansions that were planned.

The next expansion came in 1922 when the line was expanded to Twyford where it met up with the Llywelyn Pineapple Company's narrow gauge line. This was also the year where another line from Union to Toyosaka was built, letting trains run from Flower Hill to Manseibashi. Due to the unprofitability of the Twyford branch, all trains would be routed via Manseibashi from 1923 onwards till 1989.

In 1937, the 60 series electric multiple units were introduced, replacing all the existing 10, 20, and 30 series steam trains. Being a slow line and right by the coast, the Tokaido Line was electrified using a third rail.

In 1960, with the opening of North Avenue station, Emmaru Railways began to run a mainline service called the "Tohoku Line" from Hon-Madokashi to North Avenue using Class C7 trains. This line used the Tokaido Line tracks between Hon-Madokashi and Kamihama Mizuna District stations.

The service pattern did not change until 1986, when Koigawa Railways' financial difficulties after the Great Depression finally caught on with them. Together with the Tennoji Line, they sold the two lines to Emmaru Railways for 500 million emeralds. Emmaru Railways decided to merge the Tohoku and Tokaido Lines, forming the current service pattern. However, Tokaido Line trains would only run express in the ex-Tohoku Line branch, while "Tohoku Line"-branded trains will only run in early mornings. This caused a lot of backlash from the communities in Epping and Mizuno since no trains would serve their stations for much of the day. A compromise was made by extending Lipan Railways' Shyrr Line to Bwlch Llywelyn station, and some Tokaido Line trains would continue to serve Gleisdreieck station.

The change of operators also meant a change in rolling stock. The ageing 60 series and most Class C7 trains were swapped out for brand-new Class C13 trains, except for the morning Tohoku Line service, which continued to use the Class C7 until their retirement in 2001. The Class C13 were futuristic trains of their time, containing LCD panels which displayed advertisements and train information. However, they were of a 4+4 formation, which made decoupling easy, but their center cabs meant that half the cab cars were useless.

As the years rolled on, the third rail mainline began to pose a problem. Most main line trains were only powered by a pantograph, which is incompatible with third rails. This made Entetsu re-electrify the line in 2020 with an electric catenary and replace all trains with the C29 and C30 stock used till this day. As the C13 stock were still fairly new, most cars were sold back to the Shafterlands to be refurbished and used on rural services.

The C29 and C30 stocks, in turn, will be replaced by the new C307 stock in 2023, with the C29 and C30 stocks being relegated to long distance commuter services with no platform doors. This is due to a new requirement within Entetsu for all trains to be platform door-compatible. While the shortening of car ends to fit standards was considered, the unique single-part build of the cab ends meant that the fronts of cab cars would need to be completely discarded, and the bogies would need to be replaced. Ultimately, buying new trains was considered a more cost-effective option. However, a significant number of trailers would still be kept as part of the C307 consist.