TMST "3-capital" set, seen on Eurostar 9138 (London Waterloo International ---> Bruxelles Midi/Brussel Zuid), while passing the HS1 viaduct in Ashford.
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Tighter curvature in that area restricts top speed to 270km/h-168mph.
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Ashford International.
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28th April 2007. 
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P.L.Guillemin (plguillemin@yahoo.fr)