Tokaido Shinkansen (東海道新幹線): History & Facts

History

Postwar economic growth put heavy pressure on the Tōkaidō corridor — the Pacific coastal strip linking Tokyo, Nagoya, Kyoto and Osaka. By 1955 the existing Tōkaidō Main Line was severely congested; even after electrification in 1956 demand stood at roughly double its capacity, and the question of a dedicated new line moved from vision to urgent engineering problem.

Japanese National Railways (JNR) committed to a dedicated high-speed line, and the plan was approved in December 1958, with ¥194.8 billion of the ¥300 billion estimated cost allocated for a five-year construction programme. Two figures were central. Shinji Sogō, the JNR president, lobbied political leaders to support the project, accepting less government funding than it ultimately required. Hideo Shima was the chief engineer, and under the two men JNR chose to build the new line to the 1,435 mm standard gauge, suited to high-speed running, rather than the 1,067 mm gauge of the existing route. Construction began formally on 20 April 1959. To bridge a financing gap, Sogō and Shima secured a World Bank loan in 1961 — they had requested US$200 million and obtained $80 million, about 15 percent of the project cost, on condition it not fund experimental technology; that loan was fully repaid in 1981. Severe cost overruns during the compressed five-year build ultimately forced both Sogō and Shima to resign.

On 1 October 1964 — shortly before the opening of the Tokyo Summer Olympics — the Tōkaidō Shinkansen entered passenger service. The timing was deliberate. Hikari 1 departed Tokyo and Hikari 2 set off in the opposite direction, inaugurating two tiers of service: the limited-stop Hikari (Tokyo–Osaka in four hours) and the all-stops Kodama (five hours). Those times masked the line's true capability: concerns that the track bed had not fully settled, and problems found during rushed construction and testing, led JNR to cap regular operation at 160 km/h, below the 210 km/h the infrastructure was built for. Ridership stood at about 61,000 passengers per day in 1964. In November 1965, once the track bed had stabilised, timetables were revised: Hikari to three hours ten minutes, Kodama to four hours, with 210 km/h permitted in normal service. The world's first high-speed railway, the line was recognised in 2000 as a joint Historic Mechanical Engineering Landmark and IEEE Milestone.

Protective fencing and a grade-separated crossing of the Tokaido Shinkansen near Odaka, Midori-ku, Nagoya.Oka21000 · CC BY-SA 4.0 · Wikimedia Commons

Cumulative ridership reached one billion passengers by 1976. On 1 April 1987 JNR was split up and privatised, and the Tōkaidō Shinkansen passed to the Central Japan Railway Company (JR Central), which also took on a share of JNR's debt. The next threshold came in March 1992, when JR Central introduced the 300 series and, with it, the Nozomi — a new fastest service. With a lighter aluminium-alloy body and VVVF inverter traction, the 300 series ran at 270 km/h and cut the Tokyo–Osaka time to two hours thirty minutes, about thirty minutes faster than before.

The rolling stock evolved across six decades. The 0 series that opened the line ran for nearly 35 years, the last withdrawn from Tōkaidō service on 18 September 1999. Its successor, the 100 series (from 1 October 1985), brought the line's first double-deck cars and served until September 2003. The 300 series inaugurated the Nozomi and ran until March 2012. Operated by JR West, the 500 series arrived in November 1997 and reached 300 km/h on the connecting San'yō Shinkansen (though limited to 270 km/h on the Tōkaidō); its long aerodynamic nose made it visually unlike any other Shinkansen. It was withdrawn from Tōkaidō service in February 2010 and moved to the San'yō Shinkansen. The 700 series (from March 1999) introduced a "duck-bill" nose to tame the tunnel-exit pressure wave, running until its final Tōkaidō service on 1 March 2020. The N700 series (from 1 July 2007) was the first Shinkansen with body-tilting, allowing higher speeds through curves; it also made every seat non-smoking, with smoking confined to smoking rooms. From 2013 the N700 sets were progressively upgraded to N700A specification, and dedicated N700A new-builds entered service on 8 February 2013. A timetable revision on 14 March 2015 raised the maximum operating speed to 285 km/h, the current ceiling. The N700S (from 1 July 2020) brought a power outlet at every seat, a trainset roughly 15 tonnes lighter than the N700A, around seven percent lower energy use, and an onboard battery system that lets the train move under its own power to a place where passengers can be evacuated easily during a prolonged power cut.

The Tōkaidō Shinkansen is among the most frequent high-speed lines in the world: at peak it carries up to 17 trains per hour in each direction — 13 Nozomi, 2 Hikari and 2 Kodama. In Japanese fiscal year 2019 an average of 378 trains ran daily, with an average delay per train of 12 seconds. The current fastest Nozomi completes the Tokyo–Shin-Osaka journey in two hours twenty-one minutes (March 2023 timetable). On 10 August 2023 the line ran 471 trains, the most ever in a single day.

The Tokaido Shinkansen viaduct viewed from the Aizuma River path in Kariya, between Nagoya and Mikawa-Anjo.Asturio Cantabrio · CC BY-SA 4.0 · Wikimedia Commons

The Tōkaidō Shinkansen generates approximately 92 percent of JR Central's transport revenue; in fiscal year 2023 the line carried about 158 million passengers, some 432,000 a day, and line revenue was approximately ¥1.2479 trillion. The 515.4 km line has 17 stations. The opening of Shinagawa Station in October 2003 — the newest station on the line — allowed further timetable optimisation. JR Central is building the Chūō Shinkansen, a maglev line, as a bypass for the Tōkaidō Shinkansen.

Stations on this line

17 stations tracked on the map, listed alphabetically. Select any to read its page.

Timeline

1958December: the Tōkaidō Shinkansen plan is approved, with ¥194.8 billion of the ¥300 billion estimated cost allocated.
195920 April: construction begins.
19641 October: the line opens, shortly before the Tokyo Olympics. Hikari 1 (Tokyo) and Hikari 2 (Shin-Osaka) are the first trains in each direction. Regular operation limited to 160 km/h; Hikari 4h / Kodama 5h. 0 series in service.
1965November: timetables revised to 210 km/h; Hikari Tokyo–Osaka 3h10m, Kodama 4h.
1976Cumulative ridership reaches 1 billion passengers.
1981The World Bank loan is fully repaid.
19851 October: 100 series introduced, bringing the line's first double-deck cars.
19871 April: JNR privatised; the Tōkaidō Shinkansen transfers to JR Central.
1992March: 300 series introduced; the Nozomi super-express launches at 270 km/h, cutting Tokyo–Osaka to 2h30m.
1997November: 500 series (JR West) introduced; 300 km/h on the San'yō, limited to 270 km/h on the Tōkaidō.
19990 series withdrawn from Tōkaidō service on 18 September after nearly 35 years. 700 series introduced in March.
2000Designated a joint Historic Mechanical Engineering Landmark and IEEE Milestone.
2003100 series withdrawn (September). Shinagawa Station opens (October), enabling Nozomi timetable expansion.
20071 July: N700 series introduced, the first Shinkansen with body-tilting.
2010500 series withdrawn from Tōkaidō service (February) and moved to the San'yō Shinkansen.
2012300 series fully retired (16 March).
20138 February: dedicated N700A new-build sets enter service.
201514 March: maximum operating speed raised to 285 km/h, the current ceiling.
2020700 series makes its last Tōkaidō run (1 March). N700S introduced (1 July).
2023FY2023 ridership ~158 million / ~432,000 daily; annual revenue ~¥1.2479 trillion; single-day record of 471 trains on 10 August.