All the standard bodyside windows on the train are laminated double glazed units comprising a toughened outer pane, an air gap, and a laminated inner pane. One window on each side is designated an egress window and has a different type of laminated inner pane from the standard window so that it can be broken more easily for escape.
In vehicle one, all the standard windows on the right-hand side shattered (ie with the inner and/or outer panes fractured). However, none of these windows had disintegrated to the extent that there was a hole in the bodyside which might not have constrained passengers within the train. Only the egress window on this side was completely broken through, leaving an exposed hole. On the left-hand side, all but one of the windows had shattered inner and outer panes but none was completely broken through. One passenger was partially ejected from this vehicle through an egress window.
In vehicle two, five of the eight windows on the left-hand side had shattered inner and outer panes and of these, three in the centre section were completely broken through, including one egress window. Three other windows had shattered outer panes only. Approximately half a tonne of ballast and soil had entered the interior through these windows. All the windows on the right-hand side remained intact. One passenger was ejected through an egress window in this vehicle.
In vehicle three, eight of the nine windows on the right-hand side had shattered outer panes, but only one of these, an egress window, was completely broken through. On the left-hand side five of the eight windows had shattered outer panes but none was completely broken through.
In vehicles four to nine, 15 of the total number of 92 windows on these vehicles were shattered, but only one egress window, located on the right hand side of vehicle four, was broken through completely