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"Do Not Hump" on intermodal spine cars

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  • Member since
    September 2010
  • 3 posts
"Do Not Hump" on intermodal spine cars
Posted by bocefus1983 on Monday, March 7, 2011 1:45 AM

I recently saw a photograph of a 5-unit spine car and on the end it said "Do Not Hump".  Can anyone explain to me what that means?

  • Member since
    December 2001
  • 3,070 posts
Posted by chutton01 on Monday, March 7, 2011 9:28 AM

Easy Enough, that means don't run the car thru a hump yard, where frieght cars are pushed up a small hill, and then roll into various sorting yard tracks dependant on remote-control switches.
There's a lot more to it, but actually I'm wondering if hump switching is really any worse than normal flat switching (I guess the final coupling bump is a bit rougher in hump switching).

  • Member since
    April 2003
  • From: US
  • 1,522 posts
Posted by AltonFan on Monday, March 7, 2011 3:23 PM

One of the Chicago area belt railways advertised a few years back that they had the best flat classification yards in the Chicago area.  IIRC, they were after auto-rack traffic.

Looking at spine cars and auto-racks, it strikes me that there really isn't a lot to those cars, and that while they might withstand road use, but not do so well being humped.  What's more with some loads, I think the customers might not appreciate their merchandise being banged up more than is absolutely necessary.

Dan

  • Member since
    May 2008
  • 4,612 posts
Posted by Hamltnblue on Monday, March 7, 2011 4:13 PM

Hmm, I thought it had something to do with teens hanging around the freight yard. Whistling

Springfield PA

  • Member since
    December 2004
  • From: Louisville
  • 512 posts
Posted by dbduck on Tuesday, March 8, 2011 3:05 PM

A video of a humpyard in operation

 

http://www.youtube.com/watch?v=MrPuqWrn1-g

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