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[quote user="BaltACD"] If by independent brake you are refering to the engines independent system - that would not release because the train brakes released.  With the engine shut down, the independent locomotive brakes can leak off because of leakage in thier own system, If the train is on a grade and the cars are not properly secured by effective hand brakes and the air brakes are released for whatever reason, the train can roll down the grade - it can pull a locomotive consist with their brakes applied if the train is of sufficient weight and the grade is sufficiently steep.  Having brakes applied on the engine consist alone is no guarantee that a train on a grade will remain in place if the brakes become released on the train. Properly securing a train or a cut of cars is one of the cardinal responsibilities of employees in train and engine service - on my carrier failure to do it has become a firing offence (and has been from before the Canadian incident).  [/quote] So the independent brakes might have leaked off and fully released or partly released; or they may not have leaked enough to release at al.  But even if fully applied, the train could have still shoved the engines down the hill if the train brakes released. I would think they have gotten some pertinent information off of the event recorder by now.  I wonder when they are going to tell us what they found.
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