TNC Rail Engineers have played a major role in many successful freight car engineering projects including:

- 32-foot, 232-ton Heavy Duty Flat Car, Completely designed in 3D solids.

- New heavy duty flat car designs from standard 4-axle 100-ton cars to 12-axle cars.

- New gondola and hopper car designs for 286k gross rail loading

- New hybrid coal gondolas constructed with carbon steel, stainless steel and aluminum

- Classical analysis for covered hoppers, open-top hoppers, boxcars, gondolas and flats.

- Hundreds of AAR Extended Service Status inspections and submittals and approvals