Recognition M ethod for Change Point of Traffic Flow Linear Regressions

Recognition method of traffic flow change point was put forward based on traffic flow theory and the statistical change point analysis of multiple linear regressions. The method was calibrated and tested with the field data of Liantong Road of Zibo city to verify the validity and the feasibility of the theory. The results show that change point method of multiple linear regression can make out the rule of quantitative changes in traffic flow more accurately than ordinary methods. So , the change point method can be applied to traffic information management system more effectively. Key words : traffic flow ; quantitative changes ; multiple linear regressions ; change point recognition CLC number : U491 Document code : A Article ID : 1672-5220 ( 2012 ) 01-0059-03