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Operational Planning Problems in Intermodal Freight Transportation

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Jenny Nossak

This book addresses logistics problems (e.g., routing and partitioning problems) that are encountered in intermodal freight transportation. The reader is given an overview of the relevant literature, as well as of different mathematical formulations. Moreover, algorithmic solution approaches are suggested which are specially designed for problems that arise in the context of intermodal freight transportation, but can be applied to other areas as well.

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Chapter 2 Truck Scheduling Problem

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The chapter at hand addresses a truck scheduling problem as considered in Nossack and Pesch (2012b). This problem arises in the pre- and end-haulage of intermodal freight transportation where containers need to be transported between customers (shippers or receivers) and container terminals (rail or maritime) and vice versa. The transportation requests are handled by a trucking company which operates several depots and a fleet of homogeneous trucks that must be routed and scheduled to minimize the total truck operat- ing time under hard time window constraints imposed by the customers and terminals. Empty containers are considered as transportation resources and are provided by the trucking company for freight transportation. We for- mulate this truck scheduling problem as full-truckload pickup-and-delivery problem with time windows (FTPDPTW) and solve it by a 2-stage heuristic solution approach. Computational results are presented for randomly gener- ated instances. 2.1 Problem Description The trucking company that we consider in this setting, operates a fleet of homogeneous trucks to handle a number of transportation requests. The re- quests that are fundamental in the pre- and end-haulage of intermodal freight transportation imply the movements of fully-loaded containers between cus- tomer places and terminals and vice versa. The containers that are used for 12 Chapter 2. Truck Scheduling Problem ! ! Fig. 2.1: Types of Transportation Requests freight transportation are owned by the trucking company and are provided to the customers. This supply of empty containers results in the need of empty container repositioning which is partly achieved by considering addi- tional...

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