Piggyback Transportation refers to the Transportation of goods where one Transportation unit is carried on the back of something else. It is a specialised form of intermodal Transportation and combined transport. A Piggy Back Train is also known as the TOFC, the Lohr Railway System or Modalohr System Disclaimer Our content is not in any way legal advice or binding. The information provided by might not be the official legal or full definition. Also when pursuing a specific transaction you are encouraged to conduct your own due diligence and to consult legal counsel as appropriate.