Yuji ODAKE
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Niigata City of Traffic Policy Evaluation Uses "Time of Day User Equilibrium Assignment"
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Kazusi SANO,Hiroaki NISHIUCHI
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This study was conducted to the following two points. The first one it should be to clarify the usefulness in traffic assignment analysis "Time of Day User Equilibrium Assignment" of verification and application of mind. The second one, in the evaluation of transport policies aimed at eliminating traffic congestion and fee income by changing pricing in each time period in the highway.
First went traffic assignment analysis for Niigata City area. "Frank-Wolfe method" is a model used in this assignment analysis. To evaluate the time width is two types of Day Unit and An hour Units. Also, when It moved to next time zone in the An hour Units evaluation, "OD adjustment method" applied it. "BPR function" to use as the link cost function based parameter estimation from probe data and road conditions.
And aggregate traffic amounts obtained by usage analysis results, the estimated traffic volume and, it based on observed traffic compared to measured values, based on the census. And set the screen lines in comparison, made absolute estimation errors compared in different places. Later, by another day and another time zone errors compared to comparison items should error total and the number of places. Indicates the significance of time units, compared with distribution method, traditional findings, that could. However, found that further improvement is needed. For example, in such as "BPR function" and the time value set. Total time on the network and aggregate fee income one day based comprehensive assessment analysis on these. Trial results confirmed that there is "trade-off" relationship between total time and fee income. Think will eventually meet at the same time to minimize the duration and fee income measures, could show some. However, did not arrive until a detailed analysis felt required further improvement.
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