The Port of Long Beach is in the midst of field testing a digital tool aimed at maximizing cargo efficiency and visibility at its port. The port has been developing a Supply Chain Information Highway, which is now being demonstrated in the field to further refine its data-delivery capabilities, the port revealed July 26. The digital highway, which the port’s six marine terminals are beta testing, features a dashboard that lets customers access location data and track containers as they move through the port and when they are ready for pickup. Also featured is public, real-time information on a container…