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Norfolk Southern track geometry uses NS 33 and NS 34. Norfolk Southern Track Geometry NS 33 and NS 34 passed along the Norfolk Southern Back Belt at the end of March. The pair are loaded with equipment that simulates car loads and sensors to pick up how those loads react on NS track across the country. A regular locomotive pulls both cars. NS 33 is a converted passenger coach. NS 34 began as an EMD SD35 locomotive. The railroad converted it into into a "slug," an add-on unit that adds traction to a locomotive. Norfolk Southern then converted the slug...
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