Management claimed to be unaware of this practice, even though it was quite common. In regards to engineer John Hudson, the Foisy Commission concluded it was a possibility that the collision happened because he had either fallen asleep at the controls or had suffered a heart attack or stroke due to his extremely poor health. The report highlighted that there was no evidence that either train made any attempt to brake prior to the collision. Analysis of the line showed both trains would have only been visible to each other for the final 19 seconds before the collision. No conclusive reason could be found for the failure of the passenger train crew to react, neither was there any evidence that the Super Continental crew had made any errors before the accident. No evidence could be found to explain why the freight train failed to stop at the absolute signal at the Dalehurst control point. After a wrong-side signal problem was eliminated, human error was considered the only possible cause. Tests on the crews' remains ruled out drugs or alcohol as a cause, though it was revealed that the engineer of the freight train, Jack Hudson, was an alcoholic and heavy smoker who suffered from pancreatitis and type 2 diabetes, thus placing him at risk for a heart attack or stroke. The commission further criticized CN's ineffective monitoring of Hudson's health condition: The serious nature of Hudson's medical condition...raises a strong possibility that it was a factor contributing to the collision of February 8...The Commission therefore concludes that engineer Hudson's medical condition possibly contributed to his failure to control Train 413. The Commission also concludes that there are serious deficiencies in the manner in which CN monitored and reacted to that condition. The Commission finds that both the policies and procedures that permitted a man in Hudson's medical state to be responsible for the operation of a freight train on the CN main line to be unacceptable. Another frequently ignored safety regulation mentioned in the report was the "deadman's pedal", which a locomotive engineer had to keep depressed for the train to remain underway. Were he to fall asleep or pass out, his foot would slip from the pedal, triggering an alarm and engaging the train's brakes automatically a few seconds later. However, many engineers found this tiresome and bypassed the pedal by placing a heavy weight (often a worn out