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Old January 25th, 2008, 06:22 AM   #41
Richard Mlynarik
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Amazing Shinkansen double-track operations

I made a time-distance graph of traffic on the Tokaido-Sanyo Shinkansen
www.pobox.com/users/mly/JR/200710-Tokaido-Sanyo-Shinkansen-graph.pdf
using the information in the public timetables http://jr-central.co.jp/eng.nsf/english/timetable
(The timetable I used was October-November 2007, since superseded.)


Note that these lines are nearly uniformly two tracks only, with very limited sections of passing loops at intermediate stations -- basically little more than the length of the 400m platforms --, which makes the frequency and reliability of the many hundreds of daily train overtakes even more astonishing.

The traffic density and the operational precision necessary to sustain the service are simply amazing.

Scheduled headways are 3 minutes.
There's other traffic which is not shown.
There's plenty of fun stuff to discover, like local trains pulling over and having two expresses blast by -- station dwell times on the order of only 5 minutes.

Dashed lines are trains that run less than 5 days a week, or whose days of operation I was too lazy to fully decode from the far from simple timetable. In the end, of course, everything has to fall into repeating patterns with some holes where paths aren't filled or at peak/off-peak transitions.


PS it turns out that there is cab ride video video of a Nozomi express service on this line (Shinkansen 500 series train) (subtitled):

Parts 1-8
http://www.youtube.com/watch?v=CiD7QKJKc8Y
http://www.youtube.com/watch?v=6IJtlkCVkSg
http://www.youtube.com/watch?v=xomsvdlH-4M
http://www.youtube.com/watch?v=ZJdTjdOFl2E
http://www.youtube.com/watch?v=kBbcLwHZlpA
http://www.youtube.com/watch?v=zYXCcvj4ogI
http://www.youtube.com/watch?v=oG3QcNDS4GA
http://www.youtube.com/watch?v=9JiyrWniyzQ

The run depicted is very similar to but not identical with the Nozomi
train number 2 "N2" in my diagram.

Bonus Shinkansen inspection and maintenance video (no subtitles):
http://www.youtube.com/watch?v=ZUcfsqlzLRs
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Old January 25th, 2008, 03:14 PM   #42
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That's a great graph, thanks for producing it. Can't see that sort of thing happening in the UK any time soon!
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Old January 26th, 2008, 04:40 AM   #43
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Quote:
Originally Posted by Richard Mlynarik View Post
I made a time-distance graph of traffic on the Tokaido-Sanyo Shinkansen
That's pretty darn impressive! What software did you use? MS Excel?
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Old January 26th, 2008, 06:28 AM   #44
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Doesn't look like Excel, but that is an absolutely amazing graph. The Japanese really did go all out with their rail network - it's something to be infinitely proud of.

Last edited by Svartmetall; January 27th, 2008 at 08:51 AM.
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Old January 26th, 2008, 10:59 PM   #45
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Quote:
Originally Posted by Svartmetall View Post
The Japs really did go all out with their rail network
"Jap" is a derogatory term, FYI.



Damn, that's one hell of a graph, no wonder JR Central is building that maglev relief line
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Old January 27th, 2008, 02:42 AM   #46
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If you draw the Tokyo to Fukuoka(westbound) schedule from the bottom up you would complete the diagram.

JR Tokai boasts punctuality of the Tokaido Shinkansen with average delay per train throughout the year of only 0.3minutes.
Average of total time of late departures and arrivals of one minute or more from/to Tokyo and Shin-Osaka stations,
including delays caused by uncontrollable reasons such as heavy rain, typhoons, and heavy snowfall.

JR Tokai data book 2007
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Last edited by Tri-ring; January 27th, 2008 at 08:43 AM. Reason: For clarification
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Old January 27th, 2008, 07:30 AM   #47
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Old January 27th, 2008, 08:51 AM   #48
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Quote:
Originally Posted by TRZ View Post
"Jap" is a derogatory term, FYI.
Sorry, I didn't know that. It's what they are called in Britain... I'll go back and edit my post so as not to cause offense.
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Old January 27th, 2008, 11:16 PM   #49
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not wanting to stir a storm here, but how is "jap" derogatory, its like me saying being called a "brit" is derogatory. I'm sure its more to do with the context...
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Old January 28th, 2008, 01:41 AM   #50
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jap for Japanese, nip for Chinese, and goose for Korean were all derogatory term during different wars. But time has changed, and people has also come to accept it. Although AFAIK, nip and goose's still quite offensive and will get you a few stare.
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Old January 28th, 2008, 01:57 PM   #51
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Quote:
Originally Posted by SungIEman View Post
jap for Japanese, nip for Chinese, and goose for Korean were all derogatory term during different wars. But time has changed, and people has also come to accept it. Although AFAIK, nip and goose's still quite offensive and will get you a few stare.
"Nip" and "Jap" both refer to Japanese ("Nippon" is "Japan" in Japanese language), and are terms used by the western allies from World War II to refer to the Japanese at the time. The Chinese one you are referring to is "chink", which is just as bad as any of the others. "Brit" to my knowledge, has no war connections, but I am unclear on the background of that abbreviation.
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Old January 29th, 2008, 12:06 AM   #52
Richard Mlynarik
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Quote:
Originally Posted by bmfarley View Post
That's pretty darn impressive! What software did you use? MS Excel?
I have personal code I use to generate the basic graph and labels (as Postscript) from a table of data.
It can be used for much less interesting and much less competent lines also: eg http://www.pobox.com/users/mly/Caltr...0406+xings.pdf

Cutting and pasting the times from the PDF files was tiresomely done by hand, no software in my possession being adequate to the task.

Then there's a whole lot of hand editing and labelling and prettification done in Illustrator. It was quite a lot of effort, and not very automated

Re "Japs", etc, into which this thread misdirected: that's only even vaguely offensive in America, and certainly nowhere else in the English-speaking world. The sooner Americans stop pretending they're the entire world and the sooner they stop lecturing to the world the better for everybody.

PS here are some other interesting graphically presented train operating data, this time from Switzerland, showing platform occupancy, and indirectly train connections and the overall "takt":
http://www.pobox.com/users/mly/SBB/Z...0407-an-ab.pdf (Zürich HB)
http://www.pobox.com/users/mly/SBB/L...0407-an-ab.pdf (Luzern)
http://www.pobox.com/users/mly/SBB/A...0407-an-ab.pdf (Arth-Goldau)

And here's really excellent takt graphical communication:
http://static.nzz.ch/download/pdf/Fa...netzgrafik.pdf
(entire national long-distance network, not showing local traffic)
http://www.zvv.ch/pdf/Netzgrafik%20S...0ZH%202007.pdf
(just Zürich area S-Bahn, not showing bus or tram traffic)

"We [Swiss transportation planners] are lazy; we just plan one hour and repeat it all day every year."
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Old January 30th, 2008, 12:57 AM   #53
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Really interesting.

Great work!!!!
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Old May 3rd, 2008, 03:49 AM   #54
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vehicle of Kanto

Kawasaki Line
high-resolution http://www.youtube.com/watch?v=WtgR7RlpVrI&fmt=6

Chiba monorail
high-resolution http://www.youtube.com/watch?v=-tCwFZgoTDQ&fmt=6

Tokyo yurikamome
high-resolution http://www.youtube.com/watch?v=GMgwsLOvV7k&fmt=6


Morning drive in Tokyo
http://www.skyscrapercity.com/showth...6#post20273756

Last edited by japanese001; May 3rd, 2008 at 10:16 PM.
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Old May 4th, 2008, 03:25 PM   #55
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Wow, great videos! And the High Quality links!
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Old May 29th, 2008, 11:21 AM   #56
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N700's radical nose

Quote:
Originally Posted by Minato ku View Post
I don't really like the "nose" of new N700, I prefer the design of the 500.
Quote:
Originally Posted by xXFallenXx
the 500 looks a lot better than the 700.
Could be function above form.

This nose may optimally distribute air to the edge above the train, and the 2 side edges. In particular it may distribute air evenly to the upper corners.

How the nose works in reverse at the end of the train is possibly more important for drag minimisation.

It may also utilise findings from hypersonic theory, which finds benefits in smooth changes in cross sectional area. That is why it appears to start thick, and then thicken slower. In reality the cross sectional area may be increasing linearly.

This design certainly sets Hitachi apart from Siemens and Alstom.
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Old May 29th, 2008, 12:54 PM   #57
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I understand it to be for the benefit of tunnels, balanced with the general aerodynamic requirements. When any train enters a tunnel a shock wave travels down the tunnel at the speed of sound. The intensity of the shock wave depends on the displacement of air by the vehicle and the speed of that vehicle - the speed variable being square and the displacement variable cubic. Hence the shock wave gets quite huge at shinkansen speeds. This type of nose is designed to mitigate the intensity of the shock wave as it enters the tunnel, same with the duck-billed Spanish train. I don't really understand exactly why the shock wave is that much of a problem.
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Old May 31st, 2008, 08:42 PM   #58
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To back up what I just said, here's a vid of shinkansen coming out of a short tunnel, probably about 150 metres long, you can really here the shock especially at 0.38

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Old June 3rd, 2008, 04:05 AM   #59
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Only RESPECT FOR THE BESTS , the BIRTHPLACE of High Speed Trains and for the country that leads the railway technology ...
JR (East-West-Central-Kyushu) RULES !
Shinkansen FOR EVER !
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Old June 3rd, 2008, 10:08 AM   #60
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Ok now you're just getting annoying.
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