RER and Transilien: commitments under the new contract between Île-de-France Mobilités and SNCF

Île-de-France Mobilités and SNCF Voyageurs have approved a contract for 2026–2030, accompanied by a €7.2 billion investment plan.

A punctuality calculation that better reflects real journeys

The contract provides for trains canceled by 5 p.m. the day before to be counted when there is a shortage of drivers or rolling stock. These cancellations were previously excluded from the calculation of targets.

The RER B is targeting 89% punctuality in 2026, then 91% in 2030. The RER C and D are also targeting 91% in 2030; the RER E, 95%.

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Trains, information and assistance

The plan includes €4.4 billion for new trains and more than €1 billion to refurbish existing trainsets. Another program covers the refurbishment of trains on six lines in the Île-de-France network.

The contract also strengthens commitments regarding replacement buses, their tracking and information provided during construction work. Ticket machines and complaints are among the indicators monitored. Existing compensation mechanisms remain in place.

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