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This research reviews the northbound transportation network of a major Canadian courier, aiming to streamline U.S. transshipment operations. An integer programming model was developed to optimize gateway locations in the U.S. for cost-effective customer assignment and optimal truck routing to Canada. Four actionable recommendations from the model were implemented, resulting in annual cost savings surpassing USD 1.2 million, significantly exceeding initial estimates.
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Mansouri et al. (2024) studied this question.
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