Ambulance/Dorm car (So) of SNCF, seen on Ski Train 5895 Paris Austerlitz-Briançon.
Those cars were built as ambulances, primarily to run on pilgrim services. They are also used as dorms for youth parties at peaks.
While these cars are technically very close to conventional Corail Couchettes cars, they are devoid of air-conditioning.
This car is seen in original livery (Grey/Green).
Paris-Austerlitz. 16th February 2002. Photo by Olivier Fischer (teoz.57@wanadoo.fr) (Acknowledgements), from trains-en-voyage.com Posting and comment by P.L.Guillemin (plguillemin@yahoo.fr)