As part of our investigations, we look at everything. If we're looking at a rail derailment, we're going to look at the condition of the track, the maintenance activities and procedures, the condition of the train, the activities of the crew, training of the crew and the procedures and rules they were following, and fatigue. We look at everything. Then we narrow it down to those circumstances and conditions that may have led or contributed to that accident or created a risk of it. If we identify a safety deficiency that isn't being addressed through current regulations, rules, or actions taken by the railway, then we will make a recommendation for further action to be taken.
On September 11th, 2017. See this statement in context.