40 ton low-pressure rail flat car Low-voltage rail flatcars, as the name suggests, are rails that provide electricity to the flatcars. The principle is to supply power to the flatcars through the rails through a step-down device. The flatcars are converted into 360 voltage for the energy consumption of the flatcars. Rail transfer vehicles are suitable for long-distance transportation, can save battery and charging time, and can work continuously for 24 hours. However, rail vehicles have great requirements for laying tracks. It is recommended to invest in laying tracks before buying flat cars. Insulate the track. This can save a lot of unnecessary trouble.