Inside the System

The Shinkansen and Japanese Rail Culture

Course 4 · Chapter 5 · Inside the System

Chapter 4 ended with the opening of the line. This chapter looks at why it kept working: the track, the trains, the signalling and the habits of the staff. The usual summary is that the Shinkansen is fast, punctual and safe. A better summary is that it is a system in which each of those qualities supports the others, and in which most of the design effort goes into stopping things from going wrong (check the claims in this chapter against current operator figures).

Four Parts of One System

Dedicated track

No level crossings and no slow trains sharing the line, with fences and barriers along the route. Fewer surprises means higher speeds and tighter timetables.

Distributed power

Instead of one heavy locomotive, motors are spread along many cars. This spreads the weight on the track and helps acceleration (check the explanation).

Automatic train control

Signals are sent into the cab, and the system slows the train automatically if the driver does not respond, rather than relying on lineside signals alone (check the details).

Central control

A control centre watches the whole line, adjusts services and manages disruption in real time.

A British comparison On much of the British network, fast trains share track with slow ones, freight and local stopping services, and there are still some level crossings. Britain's fastest line, High Speed 1 to the Channel Tunnel, is closer to the Shinkansen idea (check its details). The difference between a dedicated and a mixed railway explains much of the difference in reliability.

Earthquakes

Japan sits in one of the most seismically active regions on Earth, so earthquake detection is part of the design. Seismometers along the line and on the coast can detect the first, weaker waves of a quake and cut power to trains before the stronger shaking arrives (check how the system works and its alert time). A train running at speed can then slow or stop in time.

Detect early, stop early The principle is to use the small time gap between the first and later waves. It does not predict an earthquake. It reacts very quickly once one has begun. Check the current operator descriptions and any reported performance in recent quakes.

Punctuality

Average delays on the Shinkansen are often quoted as less than a minute (check the figure and year). The result comes from several things together.

Factor	How it helps
Dedicated track	No interference from slower services
Fast turnaround	Crews clean and reset trains in a very short stop
Staff habits	Pointing and calling to confirm each check, a practice found across Japanese rail (check origin)
Maintenance	Overnight inspection and work, since the line is closed at night

The Safety Record

The operator has reported no passenger fatalities from train accidents on the Shinkansen since it opened in 1964, a claim that is often repeated (check this carefully, including how it is defined and whether it still holds). Non-accident incidents, such as injuries on platforms or in doorways and other harm, are a separate matter and should not be confused with it.

Read safety claims carefully "No fatalities" depends on the definition: train accidents versus any death connected to the system. When you see a safety record quoted, ask how it is defined, over what period, and by whom.

Exercises

Exercise 1

Name the four parts of the system described in this chapter and say which one you think contributes most to punctuality, with a reason.

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Exercise 2

In three sentences, explain how an early-detection earthquake system works and what it cannot do.

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Exercise 3

Find a train punctuality statistic for a British operator and one for a Japanese operator. Write two sentences on whether the two numbers are measured in the same way.

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Quick Reference

System: dedicated track, distributed power, automatic train control, central control
Earthquakes: early detection cuts power before strong shaking arrives
Punctuality: a result of track, turnaround, staff habits and maintenance
Safety claim: no passenger deaths from train accidents, with a definition to check
Check: delay figures, pointing and calling origin, alert times, the safety claim and how it is defined, High Speed 1 details

Next chapter: Privatisation and the JR Companies, which covers the 1987 break-up of the national railway and the private railway empires.