Using GA to Optimise the Selection and Scheduling of Road Projects
The task of selecting and scheduling a sequence of road construction and improvement projects is complicated by two characteristics of the road network. The first is that the impacts and benefits of previous projects are modified by succeeding ones because each changes some part of what is a highly interactive network. The change in benefits results from the choices made by road users to take advantage of whatever routes seem best to them as links are modified. The second problem is that some projects generate benefits as they are constructed whereas others generate no benefits until they are completed. There are three general ways of determining a schedule of road projects. The default method has been to evaluate each project as if its impacts and benefits would be independent of all other projects and then to use the resulting costbenefit ratios to rank the projects. This is far from optimal because the interactions are ignored. An improved method...
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