Journal of Shanghai Jiaotong University ›› 2012, Vol. 46 ›› Issue (03): 436-440.

• Communication and Transportation • Previous Articles     Next Articles

Dynamic OD Matrix Estimation Model of Urban Network

 DIAO  Yang-a, JUAN  Zhi-Cai-a, NI  An-Ning-b   

  1. (aAntai College of Economics & Management; bSchool of Naval Achitecture,Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200052, China)
  • Received:2011-04-10 Online:2012-03-30 Published:2012-03-30

Abstract: Realtime dynamic OD matrix is an important input for dynamic traffic assignment system. This paper built a new statespace model whose measurement equation will take the interaction detection data into account, and proposed a onestep prediction Kalmanfiltering model to achieve this target. The case study shows that including the interaction data into the measurement equation will give a more accurate estimation and prediction and a simulationbased assignment matrix will give a more accurate reflection on how many volumes are detected by certain facility.  

Key words: dynamic traffic assignment(DTA), statespace model, Kalman filtering, simulation

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