A study by the association Parlons Climat en 2025, relayed by Jean-Marc Jancovici, takes stock of the acceptability of measures designed to protect the environment and combat climate change. The first of these received 86% support from the French, and of course it was a question of ‘developing rail transport’.

In the spring of 2024, the SGPSO, SNCF Réseau and Odoxa carried out a survey, one of the results of which was that the New South-West Line was expected by... 86% of French people.

Figures are not decisive, but they are enlightening.