TGV services suspended temporarily

Two direct TGV InOui services between Paris and Grenoble have been suspended during the week, according to reports. The French national rail company SNCF aims to restore the services starting December 14, while user associations warn about the economic fragility of this essential link for the Isère region.

Reason for the suspension

The reduction in service was confirmed by SNCF Voyageurs in information reported on October 26 by Grenoble Mag. The company explains the reduction by the availability constraints of its trains and maintenance operations. It presents the cancellations as temporary and mentions the arrival of new trains to restore normal service starting December 14, 2026.

Impact on travelers

For Grenoble travelers, the difference is concrete: a direct trip avoids a transfer, especially for professional travel to the capital or for returning in the evening. The trains actually offered vary depending on the date and time chosen. Travelers must therefore check their itinerary at the time of booking, rather than relying on a usual frequency.

Economic concerns raised

This line is frequented, but economically fragile. The National Federation of Transport Users Associations (FNAUT) has warned since September 28 about the balance of the Paris–Grenoble link. It highlights its role for the residents, businesses, and tourism of the Grenoble metropolitan area, while fearing that the increase in rail tolls may permanently weaken the service.

Report on financial status

The report by the Bussereau mission, made public by the Ministry in charge of Transport in July, describes the link as an axis with sufficient traffic, but with a deficit in its operation. The data cited for 2024 show more than 1.3 million travelers, 169 million euros in revenue, and 80 million euros in rail tolls. These figures illuminate the economic constraints, but do not constitute a complete profit and loss statement for the link.

Route challenges

The route explains part of this equation. According to FNAUT's analysis, about a third of the travel time is spent on a conventional line rather than a high-speed line. The federation also notes the stops at Lyon-Saint-Exupéry and the reductions in service already implemented. The continuity of the direct TGV thus constitutes a challenge specific to the Grenoble area, beyond the mere number of passengers transported.

Understanding rail tolls

Rail tolls are the amounts paid by carriers to SNCF Réseau for using the infrastructure. The Authority for Transport Regulation has validated the grid planned for 2027–2029, including measures to reduce tolls for certain territorial development services. FNAUT notes that Grenoble does not benefit from the device applicable to certain sections of conventional lines and requests a review of the criteria.

Proposed solutions

The Bussereau mission proposed several options: modulation of tolls, improvement of productivity, specific agreements, and, in the long term, solidarity mechanisms between operators. In its July communication, the government has favored, at this stage, performance gains and incentive devices. No new specific aid for Paris–Grenoble has been announced in this context.

Next milestone for users

December 14 now constitutes the next milestone for users. SNCF announces a return to normal at that time, but the published information does not yet detail the numbers or schedules of the two affected services. Regular travelers, especially those who organize professional round trips, will have to compare direct trips and transfer options at the time of booking or updating reservations.

Long-term funding concerns

The prospect of December answers the immediate question of availability. The funding question remains longer-term: FNAUT wants the next tariff rules to take more account of the needs of the Grenoble territory. The Ministry, on the other hand, places the reflection on the sustainable funding of TGV services for the 2030s.