1. The arrangement of seats in the entire compartment should be reasonable, especially the driver's seat must be in the best position;
2. The shape design of the seat must conform to the physiological functions of the human body, and strive for beauty under the premise of ensuring comfort;
3. The seat must be safe and reliable, should have sufficient strength, rigidity and durability, compact structure and reduce mass as much as possible;
4. The various adjustment mechanisms set up to meet the comfort of drivers and passengers must have reliable locking devices to ensure safety.
