This is a two level parking system, where one car is parked on the ground level and one on the platform. The car on the ground level will need to be removed for lowering and removing the car parked on the platform.
I would personally recommend this system to be the first choice for all public places like malls, Corporate offices and public parkings. Automation is convinient, but at the same time is time consuming, for places where almost entire traffic comes in at the same time, in automated systems, the wait time can be long and exhausting, over and above if there is a technical glitch, the cars on the system can remain stuck till resolved. whereas in Dependent systems, retreiving the cars manually is always an available option, and the traffic can be managed smoothly.