1. Different drivers drive different trains, and the parking control is not easy to control.
2. Limited to the height of the overall carriage and cargo, the overall height space is insufficient, and the internal jacking and transportation need to be designed reasonably and stably.
3. The design of the internal jacking control of the car body must be reasonable and stable, and the reliability of long-term work must be guaranteed.
4. Various sensor detection settings should be scientific and stable.