1，High land use rate

The practical area of parking system for transportation accounts for a large proportion of the total building area, both of which are close to 0.9:1, which makes the effective utilization rate of garage area much lower than that of mechanical three-dimensional parking lot.

2，Higher stopping efficiency

Because the mechanical parking system uses mechanical equipment to realize the parking and picking up process, the degree of automation is high; However, users need to drive their cars to find parking spaces and stop in the self-driving parking lot, which increases the workload and working time of users to access the car.

3，More applicable

Due to the flexible and diverse parking equipment of mechanical parking system, it can be set according to local conditions, and the scale can be large or small; However, the self-propelled three-dimensional parking lot is large and covers a large area.

4，More reliable security

Because the mechanical parking system is equipped with reliable safety locking and control devices, it can more effectively ensure the safety of people and vehicles; Moreover, the driving on the ramp of the self-driving stereoscopic parking lot increases its risk.

5，More favorable environmental control

The mechanical parking system reduces the distance and time of vehicles, which also reduces the exhaust emissions of vehicles, and controls the noise, which is more conducive to environmental control.