Interior of a Class 22500 "MI-2N" EMU of SNCF-IdF (RER-E).
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Upper deck: this is 1 of the 2 "Regional" areas, which jointly amount to 4/5 of that deck. 
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Only accessible from the adjacent end-vestibule, not from the middle-vestibule, hence the closed end in the background.
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1st July 2007.
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P.L.Guillemin (plguillemin@yahoo.fr)