Summary
We suppose given a variable demand model with some control parameters to represent prices, a smooth function V which measures departure from equilibrium and a smooth function Z which measures overall disbenefit. We suppose that we wish to minimise Z subject to the constraint that the disequilibrium function V is no more than ε, where we think of ε as a small positive number. The paper suggests a simultaneous descent direction to solve this bilevel optimisation problem; such a direction reduces Z and V simultaneously and may often be computed by simply bisecting the angle between −∇Z and −∇V. The paper shows that following a direction Δ which employs the simultaneous descent direction as its central element leads, under natural conditions which preclude edge effects (where a flow may be zero or a price may be maximum), to the set of those approximate equilibria (where V ≤ ε) at which Z is stationary.
Then the method is extended on the one hand to deal with edge effects (allowing a route flow to be zero or a price to be the maximum permitted), by ensuring that the direction Δ followed anticipates nearby edges of the feasible region, using reduced gradients instead of gradients, and on the other hand to deal with signal controls.
Within the optimisation procedure proposed here, optimisation and equilibration move in parallel and the need to compute a sequence of approximate equilibria is avoided.
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References
Aashtiani, H., Magnanti, T.: Equilibrium on a congested transport network. SIAM Journal of Algebraic and Discrete Methods, 2, 213–216 (1983)
Abdulaal, M., Leblanc, L.: Continuous network design problems. Transportation Research, 13B, 19–32 (1979)
Allsop, R.E.: Some possibilities for using traffic control to influence trip distribution and route choice. Proceedings of the 7th International Symposium on Transportation and Traffic Theory, 345–374 (1974)
Bar-Gera, H. Origin-based algorithms for the traffic assignment problem. Transportation Science, 36(4), 398–417 (2002)
Bar-Gera, H., Boyce, D.: Origin-based algorithms for combined travel forecasting models. Transportation Science, 37B(5), 405–422 (2003)
Beckmann, M., McGuire, C.B., Winsten, C.B.: Studies in the Economics of Transportation. Yale University Press, New Haven, CT (1956)
Charnes, A., Cooper, W.W.: Multicopy traffic network models. Proceedings of the Symposium on the Theory of Traffic Flow, held at the General Motors Research Laboratories, 1958, Elsevier, Amsterdam (1961)
Chiou, S-W.: Optimisation of area traffic control subject to user equilibrium traffic assignment. Proceedings of the 25th European Transport Forum, Seminar F, Volume II, 53–64 (1997)
Clark, S.D., Watling, D.P.: Sensitivity analysis of the probit-based stochastic user equilibrium assignment model. Transportation Research, 36B, 617–635 (2002)
Clegg, J., Smith, M.J.: Bilevel optimisation of transportation networks. In: Mathematics in Transport Planning and Control, the Proceedings of the Third International IMA Conference on Mathematics in Transport Planning and Control, Pergamon, 29–36 (1998)
Clegg, J., Smith, M.J., Xiang, Y., Yarrow, R.: Bilevel programming applied to optimising urban transportation. Transportation Research, 35B, 41–70 (2001)
Clegg, J., Smith, M.J.: Cone projection versus half-space projection for the bilevel optimisation of transportation networks. Transportation Research, 35B, 71–82 (2001)
Clune, A., Smith, M., Xiang, Y.: A Theoretical Basis for Implementation of a Quantitative Decision Support System Using Bilevel Optimisation. In: Ceder, A. (ed.) Proceedings of the Fourteenth International Symposium on Transportation and Traffic Theory, Jerusalem, Pergamon, 489–514 (1999)
Cohen, G., Quadrat, J-P., Wynter, L.: On the convergence of the algorithm for bilevel programming problems by Clegg and Smith. Transportation Research, 36B, 939–944 (2002)
COMSIS: Incorporating feedback in Travel Forecasting Methods. Pitfalls and Common Concerns, Travel Model Improvement Program, Report for the US Department of Transportation (1996)
Davis, G.A.: Exact Local Solution of the Continuous Network Design Problem via Stochastic User Equilibrium Assignment. Transportation Research, 28B, 61–75 (1994)
Department of the Environment, Transport and the Regions: A New Deal for Transport: Better for Everyone. The Stationery Office (1998)
Evans, S.P.: Derivation and Analysis of some Models for Combining Trip Distribution and Assignment. Transportation Research, 10(1), 37–57 (1976)
Fisk, C.S.: Optimal signal controls on congested networks. In: Volmuller, J., Hammerslag, R. (eds.) Proceedings of the Ninth International Symposium on Transportation and Traffic Theory, Delft, VNU Science Press, Utrecht, 197–216 (1984)
Fletcher, R., Leyffer, S: Nonlinear programming without a penalty function. University of Dundee Numerical Analysis report NA 171 (2000)
Gartner, N.H.: Optimal traffic assignment with elastic demands: A review. Part II: Algorithmic approaches. Transportation Science, 14, 192–208 (1980)
Gauvin, J., Savard, G.: The steepest descent direction for the nonlinear bilevel programming problem. Operations Research Letters, 15, 265–272 (1994)
Luo, Z.Q., Pang, J.S., Ralph, D.: Mathematical programs with equilibrium constraints. Cambridge University Press (1996)
Marcotte, P.: Network Optimisation with Continuous Control Parameters, Transportation Science, 17, 181–197 (1983)
Marcotte, P.: Network Design Problem with Congestion Effects: A Case of Bilevel Programming. Mathematical Programming, 34, 142–162 (1986)
Migdalas, A.: Bilevel Programming in Traffic Planning: Models, Methods and Challenge. Journal of Global Optimization, 7, 381–405 (1995)
Outrata, J., Zowe, J.: A numerical approach to optimization problems with variational inequality constraints. Mathematical Programming, 68, 105–130 (1995)
Patriksson, M., Rockafellar, R.T.: A Mathematical model and Descent Algorithm for Bilevel Traffic Management. Transportation Science, 36, 271–291 (2002)
Payne, H.J., Thompson, W.A.: Traffic assignment on transportation networks with capacity constraints and queueing. Paper presented at the 47th National ORSA/TIMS North American Meeting (1975)
Rodrigues, H.S., Monteiro, M.T.: Solving mathematical programs with complementarity constraints (MPCC) with Nonlinear Solvers. Poster at the 12th French-German-Spanish Conference on Optimization, Avignon (2004)
SACTRA: Transport and the Economy, The Stationery Office (1999)
Smith, M. J.: A descent algorithm for solving a variety of monotone equilibrium problems. Proceedings of the Ninth International Symposium on Transportation and Traffic Theory, The Netherlands, VNU Science Press, Utrecht, 273–297 (1984a)
Smith, M.J.: A Descent Method for Solving Monotone Variational Inequalities and Monotone Complementarity Problems. Journal of Optimization Theory and Applications, 44, 485–496 (1984b)
Smith, M.J.: Traffic control and traffic assignment in a signal-controlled network with queueing. In: Gartner, N., Wilson, N.H.M. (eds.) Proceedings of the Tenth International Symposium on Transportation and Traffic Theory, MIT, 319–338 (1987)
Smith, M.J.: Bilevel optimisation of prices in a variey of transportation models. In: Mahmassani, H.S. (ed.) Proceedings of the Sixteenth International Symposium on Transportation and Traffic Theory, University of Maryland, 1–21 (2005a)
Smith, M.J.: Simultaneous descent: some details. Working paper available from the University of York (2005b)
Smith, M.J., Xiang, Y., Yarrow, R.: Bilevel optimisation of signal timings and road prices on urban road networks. Preprints of the IFAC/IFIP/IFORS Symposium, Crete, 628–633 (1997) (available from the University of York)
Smith, M.J., Xiang, Y., Yarrow, R.: Descent Methods of Calculating Locally Optimal Signal Controls and Prices in Multi-Modal and Dynamic Transportation Networks. In: Bell, M.G.H. (ed.) Selected Proceedings of the 4th EURO Transportation Meeting, University of Newcastle, 9–34 (1998)
Smith, M.J., Xiang, Y., Yarrow, R., Ghali, M.O.: Bilevel and Other modelling Approaches to Urban Traffic Management and Control. Paper presented at the 25th Birthday of the Centre de Reserche sur les Transports, University of Montreal (1996), In: Marcotte. P., Nguyen, S. (eds.) Equilibrium and Advanced Transportation Modelling. Kluwer Academic Publishers, Massachusetts, 283–325 (1998)
Tan, H.N., Gershwin, S.B., Athans, M.: Hybrid optimization in urban transport networks. Laboratory for information and Decision Systems, Technical Report DOT-TSC-RSPA-79-7; published by Massachusetts Institute of Technology, Cambridge Massachusetts, USA (1979)
Tobin, R.L., Friesz, T.L.: Sensitivity analysis for equilibrium network flow. Transportation Science, 22, 242–250 (1988)
Wardrop, J.G.: Some Theoretical Aspects of Road Traffic Research. Proceedings, Institution of Civil Engineers II, 1, 235–278 (1952)
Yang, H., Yagar, S.: Traffic assignment and traffic control in general freeway-arterial corridor systems. Transportation Research, 28B, 463–486 (1994)
Yang, H. Sensitivity analysis for queueing equilibrium network flow and application to traffic control. Mathematical and Computer Modelling, 22, 247–258 (1996a)
Yang, H.: Sensitivity analysis for the elastic-demand network equilibrium problem with applications, Transportation Research, 31B, 55–70 (1996b)
Yang, H.: Equilibrium network traffic signal setting under conditions of queueing and congestion. In: Stephanedes, Y.J., Filippi, F. (eds.) Applications of Advanced Technologies in transportation Engineering. Proceedings of the 4th International Conference, American Society of Civil Engineers, 578–582 (1996c)
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Smith, M.J. (2006). Bilevel Optimisation of Prices and Signals in Transportation Models. In: Lawphongpanich, S., Hearn, D.W., Smith, M.J. (eds) Mathematical and Computational Models for Congestion Charging. Applied Optimization, vol 101. Springer, Boston, MA. https://doi.org/10.1007/0-387-29645-X_8
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