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Old July 30th, 2013, 11:43 PM   #401
javimix19
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Sorry perhaps I explain bad. I am speaking about the tracks. In the video the tunnels have only one track, not two. (double track). It could affect the frecuencies or not I don't know.
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Old July 30th, 2013, 11:44 PM   #402
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Quote:
Originally Posted by javimix19 View Post
Thank you for the video Qtya I see that the tunnels have a single rail, not a double rail. My question is, It is not bad for frecuencies?
Maybe the frequency of the trains would be maintained with the TWO separate tunnels on that line?!?!?!??!?!?
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Old July 31st, 2013, 12:03 AM   #403
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Quote:
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Sorry perhaps I explain bad. I am speaking about the tracks. In the video the tunnels have only one track, not two. (double track). It could affect the frecuencies or not I don't know.
There are two parallel tunnels like SturmBeobachter said:
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Old July 31st, 2013, 12:11 AM   #404
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Exactly! I do not understand how someone could think that there is only one tunnel and one track on the high frequency line, when you can clearly see from the video posted that stations are two platforms wide.
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Old July 31st, 2013, 03:04 PM   #405
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Ok, sorry for say this. Tonight I'm very tired and I don't know why I said that.

Sorry again. I promise that next time I will be more lucid.
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Old July 31st, 2013, 03:21 PM   #406
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Ok, sorry for say this. Tonight I'm very tired and I don't know why I said that.

Sorry again. I promise that next time I will be more lucid.
Absolutely no problem, maybe you've only seen tunnels like this:
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Old August 17th, 2013, 07:02 PM   #407
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Photo report of the Rákóczi square station...

You've got to check this out...

https://www.facebook.com/photo.php?f...type=1&theater
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Old August 17th, 2013, 11:10 PM   #408
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How come the tracks near to and veer away from one another here in the merging of the tunnels, because there appears to be no crossover? It looks like there'll be a risk of collision.
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Old August 20th, 2013, 05:00 AM   #409
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How come the tracks near to and veer away from one another here in the merging of the tunnels, because there appears to be no crossover? It looks like there'll be a risk of collision.
There are reversing structures on the ends and one at the middle of the line.
This picture is about the reversing structure between the stations Szent Gellért tér and Móricz Zsigmond körtér, I think.

Here's a picture. That's it (or something like this):

If something go wrong on the first part of the line, the metrostocks can change dirrection here (Like cars' Y-turn.)
so everything can go on on the other part of the line.

BTW I see your problem. Maybe it's a picture about the construction of the metro.

Last edited by keleti; August 20th, 2013 at 05:08 AM.
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Old August 20th, 2013, 05:53 AM   #410
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I guess we need more images to see the whole crossover facility. The foreground to the photo is pretty dark. Even when there be no need to reverse a train, the safest operation between these two stations is to never have more than one train running throughout/along these parallel inter-station segments ... unless the whole right of way is double-decked here. I know that height clearance used to be a problem when the first line opened in the 1800s, such that I now wonder if the metro's now encountering problems with lateral clearance in its evolution there.

Puzzling mystery, this is
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Old August 20th, 2013, 03:00 PM   #411
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Quote:
Originally Posted by trainrover View Post
Even when there be no need to reverse a train, the safest operation between these two stations is to never have more than one train running throughout/along these parallel inter-station segments ... unless the whole right of way is double-decked here. I know that height clearance used to be a problem when the first line opened in the 1800s, such that I now wonder if the metro's now encountering problems with lateral clearance in its evolution there.

Puzzling mystery, this is
Could you explain it, please?
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Old August 20th, 2013, 05:51 PM   #412
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I wish I could! The photo:
Quote:
Originally Posted by nbcee View Post
seems to indicate having a wide enough passage not possible in the foreground / front for two opposing trains to pass one another there. Maybe the geology is prohibitive underground there ... maybe there are building foundations both sides of the constricted, single tunnel

We need more photos there to reveal whether the tunnel is indeed too narrow to accommodate a pair of trains side by side. Plus you're telling us that this part is mid-route. It's a mystery for me.

Maybe we need to nbcee
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Old August 20th, 2013, 06:19 PM   #413
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Quote:
Originally Posted by trainrover View Post
I wish I could! The photo:
seems to indicate having a wide enough passage not possible in the foreground / front for two opposing trains to pass one another there. Maybe the geology is prohibitive underground there ... maybe there are building foundations both sides of the constricted, single tunnel

We need more photos there to reveal whether the tunnel is indeed too narrow to accommodate a pair of trains side by side. Plus you're telling us that this part is mid-route. It's a mystery for me.

Maybe we need to nbcee
Oh, this part is for only one train at the same time as well.
This is a reversing tunel. It is used just in case of problems.
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Old August 20th, 2013, 06:41 PM   #414
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Here is a new sketch! The black lines show you, how does the trains change dirrection.

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Old August 20th, 2013, 06:45 PM   #415
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Oh? Then how come neither one of the exterior running rails in the background appears to (also) cross over the inner rails in the foreground? Neither one of your (thoughtful) diagrams appears to explain the photo.

I see that a video posted last month was also muddling to other members here.
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Old August 20th, 2013, 07:06 PM   #416
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Quote:
Originally Posted by trainrover View Post
Oh? Then how come neither one of the exterior running rails in the background appears to (also) cross over the inner rails in the foreground? Neither one of your (thoughtful) diagrams appears to explain the photo.

I see that a video posted last month was also muddling to other members here.
I don't understand what you want to say, very well. Please explain it an other kind. Or draw. Or I don't know.
Maybe nbcee can help us.
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Old August 20th, 2013, 07:17 PM   #417
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Hey! Check this out:


BTW I have made a mistake in my drawings. The reversing tunnel is the opposite of my drawings.
It looks like this: http://imageshack.us/photo/my-images/835/93hy.png
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Old August 20th, 2013, 08:59 PM   #418
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OK, it now makes sense...I'll try and bear wide-angle camera lenses in mind from now on.
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Last edited by trainrover; August 21st, 2013 at 05:38 PM.
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Old August 25th, 2013, 08:12 PM   #419
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Photo report of the Kelenföld station

http://index.hu/galeria/index/belfol..._metromegallo/
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Old September 3rd, 2013, 07:12 PM   #420
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M4 U/C



Pics for the lazy ones:

Bikás park station(project name Tétényi road):






Móricz Zsigmond körtér:






Kálvin square:




Fővám square:






Rákóczi square:











Cabride on the line:
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