Île-de-France Mobilités, SNCF and RATP implement the first measures from Yves Ramette's report to improve service on RER B. Among the concrete new features, the line now has six additional trains capable of running.

All trains will be equipped with GPS chips to better manage the fleet in operation. The maintenance workshops, in Massy (Essonne) and Mitry (Seine-et-Marne), are reorganized on weekends to better anticipate the high needs on Monday morning.