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Surface Transportation Efficiency Analysis Model (STEAM)User Manual

1.0  Introduction

The Surface Transportation Efficiency Analysis Module (STEAM 2.0) was developed in order to provide an analytical tool for estimating impacts of multi-modal transportation alternatives in a system planning context. Cost-effectiveness evaluation of alternatives is a complex process requiring close interaction among planning professionals, decision-makers, and citizens. Such assessments require an understanding, estimation, and comparison of the wide range of impacts transportation alternatives typically generate. A variety of economic, financial, social, and environmental impacts must be assessed and tradeoffs made to present decision makers with good information.

1.1 Organization of this Manual

This user manual provides the reader with a full understanding of the STEAM 2.0 software and a detailed explanation of each option incorporated in the analysis. It is organized as follows:

Chapter 2: Overview of STEAM 2.0. This chapter provides a general description of the STEAM 2.0 analysis including the model objectives, structure of the software, and analytical procedures that are incorporated in the benefit-cost analysis.

Chapter 3: Input and Output Files. This chapter explains in detail the concept of "market sectors" in relation to the STEAM 2.0 analysis and provides a description and layout of each of the market sector input files required by the model.

Chapter 4: User Interface. This chapter covers the user interface of the STEAM 2.0 software. Areas discussed include: installation of the program, defining market sectors, changing parameter values, estimating run time, performing investment analysis, and viewing results.

Chapter 5: Getting Started with STEAM 2.0. This chapter provides a step-by-step guide on performing a basic user benefit analysis in STEAM 2.0.

Appendix A: Sources of Default Parameter Values. To assist the STEAM 2.0 user in understanding how he or she may use STEAM 2.0 with travel demand output, a case study is provided and explained in this appendix.

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