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Analysis of Transportation Network Model and Applications to Coal Market Studies (TFM Model).

机译：交通网络模型分析及其在煤炭市场研究中的应用（TFm模型）。

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The objectives of the study documented in this volume involve an assessment of the usefulness of the Transportation Freight Model (TFM) for further coal transportation analysis. Specific areas of applicability include: Transportation network forecasting and scenario analyses, which require that the input data and the model logic have internal consistency and the output results have credibility; General commodity market policy studies and forecasts, which require that the results of the model have reasonable accuracy; and Small area traffic studies, for which the results of the model must have sufficient detail and confidence to provide control sums. The results of this analysis are based on several tests. Modal share confidence levels are specified by originating region, terminating region and origin/destination pair. Estimated rail costs are qualified by region. Estimated water costs are verified nationally. Results indicate that the TFM data base, when updated from the original 1972 baseline, will yield comparably accurate results; and the TFM logical successfully reflects changes in exogenous conditions. Although results were favorable, experimentation with the model suggests that performance could be improved. Recommendations are included. (ERA citation 08:033852)

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