Norfolk Southern Research 34

NW Mailing List nw-mailing-list at
Wed Nov 9 08:08:10 EST 2016

It's a track geometry car. It's been ballasted to the weight of a locomotive or loaded freight car to cause the track to deflect or behave in the way it would under said equipment. Sensors on the under carriage measure rail deflection and check for wear, alignment, and other imperfections.34 was originally N&W SD35 1530. NS has also built a similar 36 from a former N&W SD40.

Josh Blevins
Charlotte NC 
  On Wed, Nov 9, 2016 at 7:24 AM, NW Mailing List<nw-mailing-list at> wrote:   What is this piece of rolling stock and what does it do?  Also, does anybody know what was it's original configuration?  It looks like it was made from an EMD SD unit based on it's 3-axle trucks.
Bill King

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