This paper provides a methodology for estimating the cost to add simulation modeling to the analysis of alternatives that include Intelligent Transportation Systems (ITS). The use of simulation has been proven to provide a more complete assessment of alternatives, but it does require additional costs to implement. Mitretek has recently conducted two studies that include the use of large-scale simulation to analyze alternative solutions in the context of a Major Investment Study (MIS) and the assessment of near-term impacts of ITS deployments. Both studies include the use of a simulation model to supplement and further refine results from a traditional planning model. This paper briefly discusses why simulation is needed for the evaluation of ITS. Then the scope of each study is presented. From these studies the cost to add simulation modeling is derived, and provided in terms of the individual processing steps to build, calibrate, execute, and analyze results. It is concluded that the cost to add simulation will depend on the size of the network and the characteristics of the alternatives (complexity, type, ITS content, and number) to be analyzed. These costs can often be a small portion of the potential benefits that can be discovered by using simulation as part of any analysis of alternatives. (A*)
Abstract