Norbridge | Transportation | Case Study | Modeling Rail Network Performance Using System Dynamics Case Study - Modeling Rail Network Performance Using System Dynamics A major freight railroad was seeking to better understand the potential impact of large volume shifts that might result, e.g., subsequent to a merger or because of changes in marketplace demand - such as the export coal market. Would it be best to invest in more locomotives, more track capacity, more terminal capacity, more railcars, or more people? Or some of each? After decades of cost cutting, determining where to invest wasn't easy, particularly given the complexity of network performance. Approach We suggested using system dynamics - a simulation modeling approach that focuses attention on feedback loops and causal rela

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