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Drayage operations at a marine container terminal are considered. The idea is to increase efficiency of truck-based drayage operations by reusing empty import containers (street turns). Different sizes of containers, i.e., 20-foot and 40-foot containers, are considered. The transport planning problem is identified as a generalization of the well-known pickup and delivery problem. However, in extension, the transport requests are only partially specified. A heuristic is developed to solve this problem. The effect of different mixtures of 20-foot and 40-foot container requests on the possibility of street turns is tested. This is based on total operation time and other performance criteria for an example instance.