Alaskan Railroad is an independent, stand-alone railroad operation not connected

Question

Alaskan Railroad is an independent, stand-alone railroad operation not connected to any other rail service in North America. As a result, rail shipments between Alaska and the rest of North America must be shipped by truck for thousands of miles or loaded onto ocean-going cargo vessels and transported by sea. Alaskan Railroad recently began talks with the nation of Canada about expanding its railroad lines to connect with the North America railway system. Figure 5.41 summarizes the various rail segments (and associated costs in millions of U.S. dollars) that could be built. The North American railroad system currently provides service to New Hazelton and Chetwynd. Alaskan Railroad would like to expand its railway to be able to reach at least one of these cities from both Skagway and Fairbanks. Implement a network flow model to determine the least expensive way to connect the cities of Skagway and Fairbanks to the North American rail system. What is the optimal solution?

Explanation / Answer

a. the least cost model which connects Ktagway and Faribanks is- 1-2-4-3. in this route it occurs much less cost than any other alternative route.

b. so, choosing the path or way is the best alternative solution to this network.

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