Analysis and design of equilibrium points for the Cell-Transmission Traffic Model

The problem of equilibrium points for the Cell Transmission Model is studied. The structure of equilibrium sets is analyzed in terms of model parameters and boundary conditions. The goal is to determine constant input flows, so that the resultant steady state of vehicle density is uniformly distributed along a freeway. The necessary and sufficient conditions for the existence of one-to-one relation between input flow and density are derived. The equilibrium sets are described by formulas that allow to design a desired balanced density. A numerical example for the case of a two-cell system is presented.

[1]  C. Daganzo THE CELL TRANSMISSION MODEL.. , 1994 .

[2]  Carlos Canudas de Wit,et al.  Optimal Control of Systems of Conservation Laws and Application to Non-Equilibrium Traffic Control , 2006 .

[3]  Francesco Borrelli,et al.  Distributed averaging with flow constraints , 2011, Proceedings of the 2011 American Control Conference.

[4]  Antonella Ferrara,et al.  OPTIMAL CONTROL OF FREEWAYS VIA SPEED SIGNALLING AND RAMP METERING , 1997 .

[5]  M. Herty,et al.  Optimal Control for Traffic Flow Networks , 2005 .

[6]  Markos Papageorgiou,et al.  ALINEA: A LOCAL FEEDBACK CONTROL LAW FOR ON-RAMP METERING , 1990 .

[7]  Roberto Horowitz,et al.  Behavior of the cell transmission model and effectiveness of ramp metering , 2008 .

[8]  H. Kushner,et al.  Optimal and approximately optimal control policies for queues in heavy traffic , 1989 .

[10]  C. C. Wit,et al.  OPTIMAL RAMP METERING STRATEGY WITH EXTENDED LWR MODEL, ANALYSIS AND COMPUTATIONAL METHODS , 2005 .

[11]  R. Horowitz,et al.  Globally optimal solutions to the on-ramp metering problem - Part 1 , 2004, Proceedings. The 7th International IEEE Conference on Intelligent Transportation Systems (IEEE Cat. No.04TH8749).

[12]  Thomas Parisini,et al.  Neural approximations for feedback optimal control of freeway systems , 2001, IEEE Trans. Veh. Technol..

[13]  Xiao-Yun Lu,et al.  Combining Variable Speed Limits with Ramp Metering for freeway traffic control , 2010, Proceedings of the 2010 American Control Conference.

[14]  G. G. Stokes "J." , 1890, The New Yale Book of Quotations.

[15]  Yi-Hsien Chiang,et al.  Decentralized Control of Freeway Traffic Flow with Neighboring Cellular Information , 2006, 2006 IEEE International Conference on Systems, Man and Cybernetics.

[16]  Antonella Ferrara,et al.  Optimal control of freeways via speed signalling and ramp metering , 1997 .

[17]  A. Hegyi,et al.  Optimal coordination of ramp metering and variable speed control-an MPC approach , 2002, Proceedings of the 2002 American Control Conference (IEEE Cat. No.CH37301).

[18]  R. LeVeque Numerical methods for conservation laws , 1990 .