Introduction |
The Tohoku Shinkansen extension from Hachinohe to
Shin-Aomori commenced service on 4 December 2012,
completing construction of the full Tohoku Shinkansen,
which had started just over 40 years earlier in 1971.
Moreover, there is much anticipation of the further expansion
of the shinkansen network prior to the opening of the
Hokuriku Shinkansen through to Kanazawa in late FY2014.
(JR East’s section of this new line is between Nagano and
Joetsumyoko.) This article describes the expansion of
the shinkansen network, its current status, and JR East’s
measures to increase train speeds. |
Current Status of Shinkansen Network in
JR East Area |
JR East’s current shinkansen network consists of five
lines—the Tohoku Shinkansen (Tokyo–Shin-Aomori),
Joetsu Shinkansen (Omiya–Niigata), Hokuriku Shinkansen
(Takasaki–Nagano, more commonly known as the ‘Nagano
Shinkansen’ ), as well as the Yamagata Shinkansen
(Fukushima–Shinjo) and Akita Shinkansen (Morioka–Akita),
which both use a dual-gauge method for run throughservices
on both shinkansen and conventional tracks (minishinkansen).
The lines extend to about 1135 km (or 1411 km, if including
the dual-gauge through-service tracks) carrying 328 trains
every day. The annual transport figure is approximately 18.4
billion passenger-km with about 87 million passengers each
year (Fig. 1). |
Development of Shinkansen Network in JR
East Area |
Table 1 lists the details of the JR East shinkansen network
development.
The Ueno–Morioka section of the Tohoku Shinkansen
and the Omiya–Niigata section of the Joetsu Shinkansen
were inaugurated during the Japanese National Railways (JNR) era. Upon the 1987 creation of the JR group
of railway operators, ownership of the shinkansen lines
was transferred to the Shinkansen Holding Corporation
(hereafter SHC, dissolved in 1991), which leased the tracks
to JR East and the other JR operators. (The Tokyo–Ueno
section of the Tohoku Shinkansen, which was built by the
SHC after the creation of JR East, was handled in the
same manner.)
However, after the October 1991 abolition of the
shinkansen track lease system, JR East purchased
the Tohoku Shinkansen (Tokyo–Morioka) and Joetsu
Shinkansen (Omiya–Niigata) tracks, which remain company
assets today.
The Yamagata and Akita shinkansen lines were not
shinkansen as defined by the Nationwide Shinkansen
Railway Development Act, but were existing narrow-gauge
lines that were widened with dual-gauge tracks to allow
through-services for both shinkansen and conventional trains
(mini-shinkansen). To reduce dual-gauging work in tunnels
and on bridges which would have been necessary if the
standard shinkansen loading gauge had been used, special
mini-shinkansen carriages with conventional-train carriage
loading gauge were used to provide through-services.
The Japan Railway Construction, Transport and
Technology Agency (JRTT) was the body responsible for
construction of the Takasaki–Nagano section of the Hokuriku
Shinkansen and the Morioka–Shin-Aomori section of the
Tohoku Shinkansen in accordance with the projected
shinkansen development scheme. These shinkansen were
constructed as public works and then leased to JR East as
the operator.
Lines and sections called ‘projected shinkansen’
(Aomori-Sapporo on Hokkaido Shinkansen, Morioka-
Aomori on Tohoku Shinkansen, Tokyo-Omiya on Hokuriku
Shinkansen (using Joetsu Shinkansen tracks between
Tokyo-Takasaki), Fukuoka-Kagoshima and Fukuoka
Nagasaki on Kyushu Shinkansen) had been designated
in the November 1973 development plan based on the
Nationwide Shinkansen Railway Development Act. Although
development of these projected lines were put on hold in
1982, the plan was reinstated in 1987.
The JR East Hokuriku Shinkansen Nagano–Joetsumyoko
section is currently under construction by JRTT, which
is working to build a line to full (not mini) shinkansen
specifications opening in spring 2015 (Fig. 2). In terms of
progress, the track laying completion ceremony was held
in May 2014 and test runs are currently underway using
shinkansen cars to confirm the functions of the structures,
tracks, overhead catenary and signals. Following opening,
the plan is to run through-services in cooperation with JR
West between Nagano and Joetsumyoko, and Joetsumyoko
and Kanazawa (which will open at the same time). This
will result in the addition of a new shinkansen line linking
Greater Tokyo with the Hokuriku region. In addition, JR East
and JR West are jointly developing a new Series E7 car
(known as W7 in the JR West area) for the line. Following
the March 2014 timetable revision, the new Series E7 started
running on the Tokyo–Nagano section ahead of opening the
through-section to Kanazawa.
The chronology of shinkansen car changes is shown in
Figure 3 (see Figure 4 for details of the Series E7). |
Figure 1: JR East Shinkansen Network
Table 1: Chronology of Shinkansen Opening (JR East Area)
Figure 2: Shinkansen Sections Under Construction
Figure 3: Chronology of Car Changes (JR East Area)
Figure 4: Overview of Series E7
Figure 5: Overview of Series E5 and E6
Table 2: Tohoku Shinkansen Speed Increases |
Measures Taken to Increase Speed |
As explained above, the JR East shinkansen network
is well developed, including through-services using
shinkansen and conventional tracks and completion of
projected shinkansen sections. However, in addition to
these developments, it is essential to shorten travel times
by implementing measures to increase speeds to gain a
competitive advantage over air travel.
JR East has been actively developing technology
to increase shinkansen speeds. Running tests using the
‘FASTECH360’ experimental high-speed shinkansen cars
have been conducted since FY2005 to research speed,
reliability, environmental friendliness, and comfort, both
in terms of cars themselves and trackside facilities and
equipment. Based on the technology research outcomes,
we succeeded in accomplishing passenger services on
the Series E5 Hayabusa running at a top speed of 300
km/h from March 2011. This was further increased to 320
km/h in March 2013, the fastest speed yet in Japan. These
achievements have been highly praised by many customers.
Furthermore, we started operating Series E6 pre-mass
production cars on the Akita Shinkansen from late FY2012;
these trains have also been running at a top speed of 320
km/h since March 2014. |
Overview of Tohoku Shinkansen
Speed Increases |
• High-speed operations implemented on Omiya–Morioka section
• High-speed operations implemented using new train cars
(Series E5 and E6)
• Increased commercial speeds introduced gradually from March
2011 to late fiscal 2013
It is no exaggeration to say that the maximum speed is
dictated by environmental performance, so environmental
measures are an essential element in efforts to increase
speed. To date, measures have been implemented both
onboard, at trackside facilities, and on equipment to control
noise. In specific terms, the nose and body shape of the
new Series E5 was designed to reduce running noise,
and a noise-reducing pantograph design was also used.
In terms of track facilities, the height of noise barriers has
been increased and tunnel portals have been fitted with
hoods to reduce pressure waves and tunnel boom. Further
technologies are being developed to achieve higher speeds
without increasing environmental noise pollution. |
Introduction of GranClass (Series E5) |
In March 2011, the new Series E5 Hayabusa made its debut
on the Tokyo–Shin-Aomori Tohoku Shinkansen. In addition
to ordinary and Green Cars, Hayabusa features the first-ever first-class car called GranClass on a shinkansen. The
GranClass cars provide a travelling space and services with
a level of luxury and comfort never seen before on Japanese
railways, and customers have been extremely enthusiastic
about this new class. The name GranClass is a neologism
based on the French word for ‘large’ and the English word
‘class’. It expresses the luxury feel of the cars as well as
their spaciousness and comfort, which are the most notable
characteristics.
The design concept is ‘Exclusive Dream – A Special
Travel Moment for You’. The interiors feature materials with
a luxury texture and feel, as well as soothing lighting, all of
which combine to create a refined and elegant space. With a
long seat pitch and only three seats abreast, the GranClass
cars achieve a sense of space and comfort, with a novel
back shell design enhancing the feeling of privacy.
The in-car service concepts are ‘a space just for
you (personal)’, ‘the best of everything (quality time for
customers)’ and ‘originality (unique appeal of Tohoku
Shinkansen)’. Special GranClass attendants provide in-car
service, offering lunch boxes consisting of seasonal local cuisine to express regional characteristics and a sense of
the changing seasons. In terms of amenities, passengers
are provided with blankets, slippers and eye masks, as well
as a choice of newspapers. JR East is planning to introduce
GranClass cars in cooperation with JR West on the Hokuriku
Shinkansen when it opens in late FY2014. |
Opening of Hokkaido Shinkansen to
Shin-Hakodate Hokuto |
The Hokkaido Shinkansen to Shin-Hakodate Hokuto is
expected to open in late FY2015. Although the operator is JR
Hokkaido, if through-services with the Tohoku Shinkansen
are planned, preparations and coordination of various
facilities are necessary, including operation plans and
operation management systems.
Furthermore, joint through-services through the Seikan
Tunnel, which currently serves conventional trains with a top
speed of 140 km/h, will require confirmation of safety measures
by all relevant parties, including the national government. |
Table 3: Seats in GranClass and Green Cars |
Conclusion |
Japan’s shinkansen network is continuing to expand and JR
East is committed to providing its passengers with comfortable
and attractive services. The company will also work with
trackside communities to achieve further development through
various measures, including tourism promotion. |