The Nevada Department of Transportation (NDOT) developed the CORSIM Modelling Guidelines (Guidelines) to provide consistency in the procedures for accepting and approving technical methodologies for CORSIM analysis. The purpose of the Guidelines is to document NDOT’s minimum requirements, and to provide appropriate checklists and guidance to illustrate the CORSIM modelling process. NDOT’s goal is to detail the procedures and techniques used to create accurate, reproducible, reliable, and defendable CORSIM models that will result in consistent analysis across all transportation projects under NDOT jurisdiction in the State of Nevada (Nevada). The target audience of the Guidelines is both model users/consultants(modeller) and decision makers/reviewers. The Guidelines allow both users and decision makers to follow a consistent process, which ultimately benefits both parties. These Guidelines are not a CORSIM training manual. Rather, the intent is to explain how to apply CORSIM to transportation projects within Nevada in an appropriate and consistent manner that conforms to NDOT’s expectations. It provides overall guidance. However, when the process, descriptions, and methods are already documented, the Guidelines refer to those publications. Guidance is provided on: • How to define and scope a CORSIM study; • How, when, and what data to collect; • How to consistently build a CORSIM model; • How to check and fix errors; • How to calibrate and validate a CORSIM model; and • How to select appropriate Measure of Effectiveness (MOE) and document the results. The Guidelines are based on previously published information (e.g., reports, manuals, and research papers), results from completed CORSIM projects, and NDOT’s experience on working with and reviewing CORSIM models. (Author/publisher)
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