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Old   April 23, 2003, 05:50
Default Train Speed
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Hi all. I need to model a train entering a tunnel with varies speed that is from low speed to high speed. But i am not sure what speed constitute a high speed train. What is the limit/range for high speed train. I am currently starting the model with a speed of 22m/s.Thanks for advice.

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Old   April 23, 2003, 07:36
Default Re: Train Speed
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The german ICE or the france TGV travel with up to 300 km/h, which is 83.3 m/s.
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Old   April 23, 2003, 08:15
Default Re: Train Speed
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Hello, When a train goes in a tunnel, there are some pressure fluctuations. If the pressure increase is too high, there will be some consequences on passenger confort. So your maximum speed is a function of the tunnel geometry, the train, .... You could find a presentation made by the SNCF (French National Railway Company) during the Star-CD french user conference 2000 at
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Old   April 26, 2003, 05:49
Default Re: Train Speed
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Hi thanks marc, that is to say once the speed is at 83.3 m/s, it is considered high speed train? Pls enlightened me.
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Old   April 26, 2003, 05:50
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Thanks for help, HVN.
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Old   February 14, 2012, 08:38
Default train moving in tunnel help
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sheikh nasir is on a distinguished road
i am working on train moving in tunnel. i am getting floating error:invalid number. can any one help me. my email is
plz help me
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