Major works continue on Saturday and Sunday between Invalides and Massy-Palaiseau in Essonne. Line 14 will close entirely from Sunday to carry out tests of the new automatic pilot system.

Several train and metro lines are under construction during the winter holidays. Here are the lines affected by work this weekend in Île-de-France. The SNCF recommends taking the RER B line between Paris Gare du Nord and Mitry Claye, then a line K train between Mitry-Claye and Crépy-en-Valois.