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Author Topic: High Speed Tunnel in late game  (Read 4351 times)

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Offline dschr

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High Speed Tunnel in late game
« on: September 30, 2014, 11:49:53 AM »
Hello,

i would be glad if a high speed tunnel could be added for the late game (>1985) as the fastest tunnel only permits 160 km/h.

Offline jamespetts gb

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Re: High Speed Tunnel in late game
« Reply #1 on: September 30, 2014, 09:52:25 PM »
Is there such a thing as a high speed tunnel in reality?

Offline dschr

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Re: High Speed Tunnel in late game
« Reply #2 on: September 30, 2014, 10:24:43 PM »
Oh yes, James, of course there are!
For instance Tunnel de Saverne in France to cross Les Vosges between Baudrecourt and Strasbourg at the Eastern part of the LGV Est Européenne is build for a regular speed of 320 km/h.
https://fr.wikipedia.org/wiki/Tunnel_de_Saverne

And the even longer Schulwaldtunnel at the SFS Köln-Frankfurt can be used with a regular speed of 300 km/h.
https://de.wikipedia.org/wiki/Schulwaldtunnel

And for an earlier example, the 10 km long Landrückentunnel at the SFS Hannover-Würzburg was started 1981 and finished 1988 and has a regular speed of 250 km/h.
The much shorter Pfingstbergtunnel near Mannheim was build even earlier: between 1976 and 1985 and has the same speed limit.

...and this is only a random list of the ones i have in mind right now. I bet that Japan and France had Tunnel at the same speed limits even earlier.

Oh and by the way: Not only Tunnels, but also switches are available for high speed rails. Today's new build switches have a speed limit up to 200 km/h  for teeing (!) trains. And this limit doesn't require any tilting functionalities of the train.
So for instance in everyday use at the station Bitterfeld at the route between Berlin--Halle (Saale) with the teeing to --Leipzig.
Switches with a high speed between 160km/h and 200km/h for the teeing ast are constructed and in use since 1984 here.
In 1960's switches had a speed limit of 130 km/h at the new build station of Ludwigshafen.
(Ehm, this is just a short summary of this wikipedia article: https://de.wikipedia.org/wiki/Eisenbahnweiche )
...To make it short, i guess that the speed limits in simutrans for tunnels and switches are too low and this especially matters on high speed routes from the 1980's until today.

Offline jamespetts gb

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Re: High Speed Tunnel in late game
« Reply #3 on: September 30, 2014, 10:38:36 PM »
Interesting - I was not aware of those. It is noteworthy that there are no UK precedents for this, which is why these tunnels may well not be in Pak128.Britain. I have moved the topic to the general (rather than the Experimental specific) Pak128.Britain board for further discussion.

Offline dschr

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Re: High Speed Tunnel in late game
« Reply #4 on: September 30, 2014, 10:39:35 PM »
Okay. How about those Tunnels and Switches at the HS1?

Offline jamespetts gb

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Re: High Speed Tunnel in late game
« Reply #5 on: September 30, 2014, 10:58:20 PM »
Hmm, interesting: I had not thought of that. This would need new graphics, I think.

Offline Junna

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Re: High Speed Tunnel in late game
« Reply #6 on: October 01, 2014, 12:40:19 AM »
I think that the Severn Tunnel and the Channel Tunnel both have such low speed limits due to them being under-water tunnels with special conditions and issues associated therewith necessitating a more limited speed (as well as the mixed-traffic, I presume). I know some of the rather lengthy tunnels on new high-speed lines in China have speed limits of 350km/h.

(The in-game Maglev had its speed limit throttled a while ago to a very low level as I recall, 200km/h.)

Offline The Hood

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Re: High Speed Tunnel in late game
« Reply #7 on: November 16, 2014, 05:13:03 PM »
Hang on - there are already 350km/h HS tunnels in the game - or at least there should be. Can you give more details?

Offline dschr

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Re: High Speed Tunnel in late game
« Reply #8 on: November 17, 2014, 09:47:14 AM »
Hello,

sure:
I am using the half height branch from here:
https://github.com/jamespetts/simutrans-pak128.britain/tree/half-heights
together with simutrans experimental:
https://github.com/pipcet/simutrans-experimental/tree/berlin

The fastest tunnel is shown ingame as "RailTunnelHighSpeed" and has the named maximum speed of 160km/h.
If you give me the file name of the 350-Tunnel i can search within the file directory wether it exists here or not.

Greetings

Offline jamespetts gb

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Re: High Speed Tunnel in late game
« Reply #9 on: November 17, 2014, 09:57:44 AM »
Are these in Standard but not in Experimental? If so, I shall have to port them.

Offline The Hood

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Re: High Speed Tunnel in late game
« Reply #10 on: November 17, 2014, 07:45:35 PM »
They have been in Standard for about 5 years (or more) I think!

Offline jamespetts gb

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Re: High Speed Tunnel in late game
« Reply #11 on: November 17, 2014, 09:52:57 PM »
It's very unlikely that they are absent specifically from Experimental, in that case.

Offline The Hood

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Re: High Speed Tunnel in late game
« Reply #12 on: November 17, 2014, 10:05:30 PM »
They are definitely in Standard (nightly and latest release). I notice that Experimental has different tunnel definitions to Standard though. The one labelled "High Speed" is 350km/h in Standard but only 160km/h in Exp.