TGV Duplex set, seen on TGV 6908 (Grenoble--->Paris Gare de Lyon).
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At this stage, this formation had just entered the HSL, using the Eastern chord ("Up" track). 
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It was thence running on the "Up" through-track, speeding from 160 up to 300km/h, underneath the fly-over for the Western chord ("Down" track), used by Lyons-South services.
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Grenay Interchange (East).
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30th April 2005.
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P.L.Guillemin (plguillemin@yahoo.fr)