conventional container blocks are served by an overhead grid network
of rails and a fleet of shuttle cranes moving on it. Effects are better space utilization
by a more compact yard without necessity of roads between blocks and faster
storage/retrieval operations than in conventional approaches with gantry cranes or
straddle carriers. A pilot design is located in Hong Kong.
Details about assisting systems (without any planning functionality) can be
found, e.g., on the web pages of service companies. This also includes detailed
handbooks for electronic data interchange (EDI and EDIFACT)