Inquiry into cause of Bretigny-sur-Orge derailment near Paris in July 2013, which left seven people dead, points finger at poor maintenance.
The tourist train on a small private railway in south-east corner of France came off the rails when it hit a rock that had fallen from surrounding hills.
After the derailment in Drancy, just north of Paris, a fire service official said radiological tests found no leaks.
Rail passengers can now travel from French capital to Catalan capital in six-and-a-half hours without changing trains.
Long-awaited plan for express rail service from Paris to Charles de Gaulle airport close to being finalised and may be funded from new ticket taxes.
French police arrest 16 youths suspected of holding up a suburban train near Paris in March and robbing passengers of valuables.
French national rail operator SNCF is offering a new low-cost long-distance service to passengers, in bid to compete with budget airlines and cars.
The controversial plans for a 26-billion-euro high-speed rail link between the two countries face opposition from environmental activists.