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Old August 2nd, 2008, 05:39 PM   #21
sotavento
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Here in portugal the fastest railway crossing is limited to 160km/h (maximum speed limit of Pendulino trains on "conventional" tracks) ... "upgraded"/HSL tracks have no corssings whatsoever (not even pedestrian crossings alowed).

Stations along "upgraded"/HSL routes usualy are passed in the "thru" tracks at the route given speed ... usualy that means 228km/h (220km/h from the limit + 4km/h from the convel tolerance + 4km/h from the "margin of error" < the "real" speed limit is actualy 227/228 ... wichever speed makes the convel buzz start to operate -1km/h )

Convel = portuguese automatic train protection system (signaling and speed are also automaticaly controled here) ... a system by ex.Ericsson (nowadays a part of Bombardier?)



more info about portuguese signaling and Convel can be found here:
http://hjcl.xico.co.uk/

Sidenotes:
- the "fastest" railway crossing in portugal is in the stretch Ovar-Maceda:
(where the current portuguese High Speed Record was broken)

- The fastest 4 track section is 40km north of lisboa from VFXira to Azambuja = 4 tracks all with 220km/h speed limit (even for conventional trains) .. it has a couple of stations (3 platforms each) in it (speed could be higher if they wanted since it is basicaly a 4 track HSL built from scratch)
- The fastest "unrenovated" track section is in the "beira Alta" line ... outside of the "renovated"/HSL speeds of 160km/h are only possible in that route and in "northern line" in the Ovar-Espinho section (actualy anything above 140km/h) ... but in EACH and EVERY crossing in "Beira Alta" the speed is limited to the regulatory 140km/h ...
I don't know for sure if this Level Crossing is inside or outside the Ovar station boundaries (hwy ... I'm on vacations and cant confirm it from here)
http://wikimapia.org/#lat=40.8683247...18&l=9&m=a&v=2
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Old August 2nd, 2008, 06:10 PM   #22
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Quote:
Originally Posted by elfabyanos View Post
Thanks. There's no mention in Mr Ford's article about the two-man driving team, so I will try to chase that one up to see if there is any basis in that. Mr Ford tends to be correct about everything so I'll agree that the current limit is more set in stone than I had thought.
Looks like 125mph (200km/h) is it in the UK (apart from High Speed 1) until ERTMS Level 2 is implemented - DfT's plan states this will start in 2018 for the East Coast Main Line and 2027 for the West Coast Main Line - so a long wait!

http://www.dft.gov.uk/162259/165234/...kertmsplan.pdf
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Old August 3rd, 2008, 11:19 PM   #23
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Whats the maximum allowed acceleration and braking (in km/h per second) for trains in general?

Or how fast can a train accelerate and brake without exceeding the passengers comfort level?
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Old August 4th, 2008, 12:30 PM   #24
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At higher speeds they can often brake as hard as possible and it won't bother passengers. As the speed decreases the deceleration rate increases (as the momentum is a factor of the speed squared), so the driver will need to back it off. But also hard braking means the brakes need to replaced sooner - and brake replacement is a much larger proportion of operating costs for trains than it is for... say buses. There's a vid on youtube of a Virgin Voyager doing an emergency stop through northallerton station - it stops from 200km/h in a few hundred metres - it certainly looks much less than a km, and afterwards the train is sitting in a cloud of smoke from its own brakes!!! Even with this kind of braking I don't think its too much for passengers to just hold on to something to steady themselves.

As far as acceleration is concerned - again due to the momentum = mass x speed squared law its at lower speeds that it could be discomforting. http://en.wikipedia.org/wiki/Taiwan_...eed_700T_train - this taiwan train has an acceleration of 2km/h/s, but then underground metro trains typically exceed that, but then they're more uncomfortable!

Last edited by elfabyanos; August 4th, 2008 at 12:45 PM.
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Old August 4th, 2008, 02:18 PM   #25
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They can't go to hard in The Netherlands;

Dutch Train;


ICE;
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Old August 4th, 2008, 03:24 PM   #26
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Old August 4th, 2008, 04:33 PM   #27
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^Jees, not normal anymore. They can't even go 100km/h in NL I think.
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Old August 5th, 2008, 10:25 AM   #28
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This one will go by far the quickest. You probably know it.

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Old August 6th, 2008, 01:41 AM   #29
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Quote:
Originally Posted by xlchrisij View Post
^Jees, not normal anymore. They can't even go 100km/h in NL I think.
Because of idiotic bicycles who crosses when they are not allowed?
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Old August 6th, 2008, 11:55 AM   #30
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Quote:
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They can't go to hard in The Netherlands;

Dutch Train;

ICE;
Are both of those videos from the Netherlands or is the ICE from Germany?
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Old August 6th, 2008, 11:57 AM   #31
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^Yes. It's a Dutch ICE in Elst.

Our trains are short...;



I think this is Japan, 2 trains, or 3?;



Japan. This is a railroad crossing in the kintetsu kyoto line;

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Old August 24th, 2008, 03:49 PM   #32
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In Sweden maximum through a level crossing with a road is 200 km/h, (which is the same as the maximum rail speed). But then the level crossing must have detectors for vehicles inside the gates.
A collision with a heavy truck is nasty. There was an accident when a short light passenger train collided at 140 km/h with a heavy truck. The train derailed, with two dead and many injured. The truck driver was not injured since he had left the truck. He got prison for not trying to continue drving (the wooden gates can be driven through).
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Old August 25th, 2008, 07:03 PM   #33
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In the last seconds one can see the alfa Pendular storming at 220km/h tru a station ...

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"O País perdeu a inteligência e a consciência moral. Ninguém se respeita nem crê na honestidade dos homens públicos. O povo está na miséria. Os serviços públicos vão abandonados. A mocidade arrasta-se das mesas das secretarias para as mesas dos cafés. A ruína económica cresce o comércio definha, a indústria enfraquece. O salário diminui. O Estado é considerado um ladrão e tratado como um inimigo.
Neste salve-se quem puder a burguesia proprietária de casas explora o aluguel. A agiotagem explora o juro…"”
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Old November 18th, 2008, 03:03 PM   #34
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In Slovenia is 160km/h.
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Old November 18th, 2008, 05:35 PM   #35
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Quote:
Originally Posted by BIL View Post
In Sweden maximum through a level crossing with a road is 200 km/h, (which is the same as the maximum rail speed). But then the level crossing must have detectors for vehicles inside the gates.
A collision with a heavy truck is nasty. There was an accident when a short light passenger train collided at 140 km/h with a heavy truck. The train derailed, with two dead and many injured. The truck driver was not injured since he had left the truck. He got prison for not trying to continue drving (the wooden gates can be driven through).

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Old December 28th, 2008, 02:12 PM   #36
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In China, the Beijing-Tianjin high-speed train run through Wuqing Railway Station at 330 km/h (it was faster during the first days the line was opened for service). The station has two platforms four tracks, non-stop trains use the tracks in the middle.
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Old December 28th, 2008, 04:34 PM   #37
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Here is a wonderful video whose uploader actually measures the speeds at which N700 Shinkansen trains go through stations. The highest figure he gives is almost equal to the maximum speed of the trains, so this shows there is no restriction to the speed through stations.

I have no idea about railway crossings.

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Old December 30th, 2008, 12:37 AM   #38
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Quote:
Originally Posted by Republica View Post
I dont get why they cant just have a signalling system controlled by GPS... Easy. Hmm i suppose you cant sent data with that can you?

I dunno.
Two reasons : first the GPS is an unidirectional system. You need to build
something wider than simply the GPS to make a signalling system out of it.

Second reason : the GPS resolution is not good enough to discriminate
between two adjacent tracks.
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Old December 30th, 2008, 06:30 AM   #39
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I don't know about speed limit on level crossing or passing station(from my memory it was not fast on both case), except this :

Cheonan-Asan station in korea
(seemed to be passing station on its full speed,but don't know exact speed)




Last edited by ruready1000; December 30th, 2008 at 08:09 AM.
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Old December 30th, 2008, 12:13 PM   #40
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@xlchrisij: I'm sure trains can go faster then 100km/u trough crossings and stations in the Netherlands. Maximum speed between Zwolle and Groningen is 140km/u. There are a lot of crossings on that line and i cannot imagine that trains will slow down for them. If you are for instance on the Beilen station, intercity trains will pass at very high speeds.
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