Abstract

Rational traffic flow forecasting is essential to the development of advanced intelligent transportation systems. Most existing research focuses on methodologies to improve prediction accuracy. However, applications of different forecast models have not been adequately studied yet. This research compares the performance of three representative prediction models with real-life data in Beijing. They are autoregressive integrated moving average, neutral network, and nonparametric regression. The results suggest that nonparametric regression significantly outperforms the other models. With Wilcoxon signed-rank test, the root mean square errors and the error distribution reveal that the nonparametric regression model experiences superior accuracy. In addition, the nonparametric regression model exhibits the best spatial-transferred application effect.

Highlights

  • Intelligent transportation system (ITS) has been widely implemented around the world, and it supports proactive transportation management

  • Traffic forecasting has been viewed from different perspectives: as a time series,[5] a pattern recognition problem,[6] a nonparametric regression problem,[7] or even combination of the above.[8]

  • The results suggest that the autoregressive integrated moving average (ARIMA) model and the BP model exhibit a poor portability, as a result of the Implementation Complex More complex Simple fact that different sites have different traffic characteristics over the same data collection period

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Summary

Introduction

Intelligent transportation system (ITS) has been widely implemented around the world, and it supports proactive transportation management. Keywords Traffic flow forecasting, autoregressive integrated moving average model, neutral network, nonparametric regression, Wilcoxon signed-rank test The ARIMA model is developed based on traffic speed data for morning peak, flat day, and evening peak on each Monday during September and October (except National Day), with no missing data.

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