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View Diary: Update: Canada "Ghost Train"on Fire Hours Before Runaway (138 comments)

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  •  Thanks for the detail (2+ / 0-)
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    catullus, bigjacbigjacbigjac

    This pretty well explains the Westinghouse Air Brake system I learned in elementary school.  

    It not clear to me if the air in the reserve tank in each car can be released so as to remove pressure from the brake shoes.  Also, it is not clear to me how the brake wheel (for human use) on each car relates to the air brake system.

    I started with the idea that this runaway was impossible in theory, but because of some runaway boxcars in Johnson City, I know that it has happened.

    So I'm stuck with Yogi Berra:  "In theory, theory and practice are the same.  But in practice, they are different."

    I'm from Johnson City.

    by Al Fondy on Sun Jul 07, 2013 at 05:57:12 PM PDT

    [ Parent ]

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