A report is out on a derailment involving an AMT train a year ago at Montreal's central station.

It involved a train arriving from Mont St Hilaire.

"What we found was that given the track conditions at the location and the geometry of the track and the fact that the new locomotive that was in service there was heavier than what they had been previously using, the track wasn't able to withstand the lateral forces that were being put on it as it was negotiating that curve and resulted in the rails spreading" said Donald Ross, who led the investigation into the accident.

Recommendations include making sure heavier locomotives operate safely.

There were 14-hundred people on board, but no one was hurt when the train, pulling nine-double-decker cars, suddenly stopped in December 2011.

photo: Radio Canada