Firstly summarized and analyzed the existing model and algorithm of traffic control and dynamic traffic assignment (DTA) synergy. Then Combined with integrative modeling of traffic control and DTA characteristics proposed a traffic control and DTA synergy strategy and structure, created a synergy model and optimization algorithm based on system hierarchical control theory, built area traffic state identification function and according to the function confirm collaborative time. Finally, simulation on a small network and results show the proposed model algorithm is effective. ICTE 2013 Downloaded from ascelibrary.org by New York University on 08/03/15. Copyright ASCE. For personal use only; all rights reserved. IJ I c a J J D C J J J   where： J is the comprehensive performance indicator of network. Recognition of the Regional StateIn order to comprehensive evaluation of regional traffic state, on the basis of the weighted average saturation and travel speed in considering, this paper constructs the, to stop iterating scheduled to coordinate the target closing value reached thresholds.Step 7：Publish the current state areas within I , and transmits the calculated travel time information to the guidance device, and the control parameters to the control subsystem. Go to step 1. ICTE 2013Downloaded from ascelibrary.org by New York University on 08/03/15.