Transport: SNCF is committed to “improving punctuality” and modernizing the equipment of its RER and Transiliens

The SNCF is committed to “improving the punctuality” of its Transiliens and RER trains in Île-de-France, which is not always there, indicates the contract signed Thursday with the transport organizing authority Île-de-France Mobilités (IDFM) for the period 2026-2030. Île-de-France Mobilités and SNCF Voyageurs voted on Thursday during their respective board meetings on the new contract linking the two entities until the end of 2030, as well as the associated multi-year investment plan, the two organizations indicated in a press release.

The contract plans to modernize the equipment and increase the ambition for the quality of service, which is far from always being met, in particular due to repeated work and aging trains on certain lines. In total, 7.2 billion euros of investments are planned to modernize RER and train equipment operated by SNCF Voyageurs in the region, i.e. 20% more than the previous contract. 4.4 billion euros will be devoted to the purchase of new trains to continue the renewal of rolling stock, more than a billion euros to the renovation of existing trains, 1.2 billion to the modernization of maintenance workshops, 160 million to ticket sales equipment and 135 million euros to passenger information.

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Punctuality objectives

In exchange for these material improvements, punctuality objectives are increased. The RER B punctuality rate, which was 89% in 2026, must therefore increase to 90% in 2027 and 2028, 90.5% in 2029 and 91% in 2030. The expected delivery of new MI20 trainsets by Alstom should improve the failing reliability of this line. On the RER C, the punctuality rate of 90% in 2026 must increase to 91% in 2030. That of the RER D must increase to 90.5% in 2029 and 91% in 2030. The RER E must reach 95% in 2030, once the extension to Mantes-la-Jolie is put into service and the line is fully equipped with new generation RERs.