Impact of French society: towns such as Chartres are becoming "TGV commuter belt"; Brussels - Paris in 90 minutes has increased commuting between the two capitals; likewise Paris - Marseille time greatly reduced recently
Impact of the building of the lines: many years of wrangles over the Lyon-Marseille line
... can mean the following:
dB is the abbreviation for Decibel; see Bel
DB is a French automobile maker; see DB (car)
DB is the abbreviation for Deutsche ...