Simulation-Based Optimization for Storage Allocation Problem of Outbound Containers in Automated Container Terminals

Table 1

Meanings of places.

Place	Practical meaning
	Outbound containers in blocks not allowed to be retrieved
	Outbound containers in blocks allowed to be retrieved
	A batch of containers that has been allowed to be retrieved
	Time to allow a new batch of containers to be retrieved
	Information of containers that ASCs have decided to retrieve but no AGV is allocated
	Containers that ASCs start to retrieve
	Loaded ASCs at I/O points
	Containers stacked at I/O points
	Residual capacities of I/O points
	ASCs ready for a next container
	Unloaded free AGVs
	Unloaded AGVs allocated to some container
	Unloaded AGVs allocated to some container at I/O point
	Loaded AGVs at I/O point
	Loaded AGVs at the foot of QC
	Ready to update positions of AGVs
	Position of AGVs updated
	Unloaded QCs at landside
	Loaded QCs at landside
	Containers that have been placed into I/O point but not handled by QCs