Cars that have not generated or will not generate freight income
- When private equipment cars are sent at the owner's request for repair, maintenance, or storage and are not assigned to any user, their movement will be subject to EMPTY FREIGHT CHARGES in both directions (9th Class).
- When empty private units are sent for loading on Ferromex and/or Ferrosur lines and are not used, the sender or the responsible Railway will be charged the freight charges.
- When units are off-route, the sender or the responsible Railway will be charged EMPTY FREIGHT CHARGES (9th Class), and the return will be free of freight charges to the exchange point where it was received.