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The Spatially Inhomongeneous Port Shipping Jam

When shipping corporations plan design their voyages and the method of port berthing, port jam is a factor of much concern to them.Through analysis of the features of the spatially inhomongeneous shipping flow phase, this article uses the master probability equation model and Kerner’s three-phase flow theory to explain the cause of the free flow phase’s conversion to the synchronized flow phase.Putting the port turnover into the integral shipping flow model,the article has analyzed the average delaying time of port jams,and explored the matter of the average shipping flow with respect to port scale.