Translate the following English sentence to French:
"Mr President, Commissioner, ladies and gentlemen, these reports make it quite clear that we are flying the flag for the transfer of traffic from road to rail in vain. If there is no technical follow-up, then our demands will obviously remain a dead letter."
Monsieur le Président, Madame la Commissaire, chers collègues, ces rapports montrent à l'évidence que nous avons beau brandir le fanion du transfert de la route vers le rail, si, du point de vue technique, cela ne suit pas, nos exigences, à l'évidence, resteront lettre morte.