From: stephen@sprunk.org   
      
   On 20-May-14 14:50, conklin wrote:   
   > "Stephen Sprunk"  wrote in message   
   > news:lle7rn$10q$1@dont-email.me...   
   >> On 19-May-14 19:11, conklin wrote:   
   >>> If the lack in a freight train is so severe that it would harm a   
   >>> human in the last car, then think of the shock done to the oil.   
   >>> No wonder they derail.   
   >>   
   >> And that oil is in sealed containers full of liquid; oh no, the   
   >> oil might suffocate and/or drown!   
   >>   
   >> "Safe for oil" and "safe for humans" are very different things.   
   >   
   > Until the shock causes them  to derail.   
      
   Shock from slack action is purely longitudinal; it could damage humans   
   or other unsecured cargo aboard the train, but the train itself will   
   remain on the rails.   
      
   Aside from the obvious case of collisions, derailments nearly always   
   boil down to a train going faster than it should have--either due to   
   crew error or due to the speed limits not being set properly for the   
   actual condition of the track.   
      
   S   
      
   --   
   Stephen Sprunk         "God does not play dice."  --Albert Einstein   
   CCIE #3723         "God is an inveterate gambler, and He throws the   
   K5SSS        dice at every possible opportunity." --Stephen Hawking   
      
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