Originally Posted by
milepig
Jumping on the thread to ask why the RER B was so messed up today (12/16). We waited for almost 45 minutes for a train at Terminal 3, and then it ended its run at Gare du Nord, and turned back to CDG. The train was PACKED with people, all of whom got off at GDN, and were then trying to figure out how to find the RER B that would continue their journey. We bailed and got a #4 Metro to St. Michel, and that was also packed almost beyond tolerance. The worst I've ever seen on the RER/Metro.
Irregular, small in scope SNCF strikes that target some suburban lines. When they impact RER line B, the interconnection at Gare du Nord between the Northern part, operated by SNCF, and the Southern part, operated by RATP, is suspended. Trains arriving from the North then arrive at the main part of Gare du Nord, on street level, rather than at the underground station, where the tracks go on South on the RATP network.