This paper presents the scheduling of incoming and outgoing semi trailers in a transshipment platform. A set of incoming semi trailers, containing products for different destinations, arrives to the cross-docking. The incoming and outgoing doors are limited; consequently, the semi trailers have to be sequenced. This paper studies the simultaneous scheduling of incoming and outgoing semi trailers for a single inbound and outbound door. The objective is to maximize the direct flow from incoming semi trailers to outgoing semi trailers. The problem is decomposed into three parts. Tabu search is integrated with dynamic programming and a heuristic method is proposed to solve the three cases of the problem. In addition, few examples are performed and the results are shown.