Vertical Circulation System  (CLICK TO SEE MOVIE)

The second most concentrated way of parking cars. Normally used in narrow spaces where horizontal circulation system won't fit. Operates similar to the horizontal system except the end platforms are transferred up and down to create the empty spaces. Most common installation is below ground with elevator access; however the system can be built above ground or as a combination system. This type of system is usually fabricated from structural steel. Operational speeds are moderate unless the system is very long. If part of the system is at ground level than access to the system can be made anywhere along its length and is not restricted to the elevators on the ends. Mechanical design is fairly simple and installation costs should be moderate. Speeds can be increased with proper use of computerized access systems.