In marine terminals, stacks are getting taller, and aisles are getting narrower as terminals strive to increase throughput by increasing the density containers. As a result, container stacks become the major blockers to locate infrastructure (both satellites and antennas)
• Terminal Tractors lose sight to the infrastructure
• Shuttle trucks degrade as they approach the ends of RMG stacks
At the quay, the accuracy of location systems is also affected by the existing blockers:
• Quay Cranes are like tree canopies in the rainforest
• Vessels, with containers stacked on deck, remove 180 degrees of view
Therefore, terminal tractors and shuttle trucks moving to and from the berth are suffering serious degradation in location accuracy.
The control of road trucks has raised a unique problem in terminal automation systems. They are a part of the operation, but not a part of the system.
The problem is usually not known, but it has been affecting automation systems which are driven by information-based decisions.
Where are they? When will they be in position for a move? Should I send an instruction to my