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Published online by Cambridge University Press: 28 April 2015
Agricultural transportation is often characterized by seasonal and cyclical traffic flows that unfavorably affect the logistical efficiency of the marketing system. Congestion problems arise in the truck-to-ship intermodal grain transfer system at the Port of Houston. Seasonal peaks in truck-delivered grain receipts create problems with efficient interfacing of the port elevators' grain-receiving capacity and truck arrival patterns. During peak volume periods, the elevators' receiving capacity is inadequate; long truck queues develop and congestion or waiting occurs. Queues of 3-4 miles are common during the peak receipt periods, whereas the facility may be idle for extended periods of off-peak time.