no passengers. The driver of the InterCity locomotive survived by getting down on the floor. The regional train would normally be one multiple unit with three cars (CP Class 2240), but, on the night of the accident, this train had two multiple units, 2257 and 2294, comprising six cars. In the aftermath of the accident, the track was not used for several days, as works were in progress to remove the debris and to repair the infrastructure, and authorities carried on investigations. A preliminary inquiry found no explanation for the accident, but ruled out human error from the drivers, and malfunctions in the signaling system. According to the inquiry, on both cases, the brakes were applied in a way that would have stopped the trains before the red signal under normal operating conditions. The inquiry commission concluded that there was lack of adhesion between the wheels and the rails. The commission suggested a speed limitation of in the accident area. References Train collisions in Portugal 2013 in Portugal Soure, Portugal Railway accidents in 2013 Railway accidents involving a signal passed at danger January 2013 events in Europe 2013 disasters in Portugal