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Spatial asymmetric duopoly with an application to Brussels' airports

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Author Info

  • Fay Dunkerley

    (CES - KU Leuven - CES - KU Leuven)

  • André De Palma

    (ENS Cachan - Ecole Normale Supérieure de Cachan - École normale supérieure de Cachan - ENS Cachan, Department of Economics, Ecole Polytechnique - CNRS : UMR7176 - Polytechnique - X)

  • Stef Proost

    (CES - KU Leuven - CES - KU Leuven)

Abstract

In this paper the problem of a city with access to two firms or facilities (shopping malls, airports, commercial districts) selling a differentiated product (shopping, flights) and/or offering a differentiated workplace is studied. Transport connections to one facility are congested. A model is presented for this asymmetric duopoly game that can be solved for a Nash equilibrium in prices and wages. A comparative statics analysis is used to illustrate the properties of the equilibrium. A numerical model is then applied to the two Brussels airports. Three stylised policies are implemented to address the congestion problem: expansion of transport capacity; congestion pricing; and a direct subsidy to the uncongested facility. Our results indicate that the degree of intrinsic differentiation between the two firms is crucial in determining the difference in profit and market share. Price and wage differences also depend on trip frequency and consumer preferences for diversity. Congestion pricing is the most effective policy tool but all three options are shown to have attractive attributes.

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Bibliographic Info

Paper provided by HAL in its series Working Papers with number hal-00348443.

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Date of creation: Dec 2008
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Handle: RePEc:hal:wpaper:hal-00348443

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Related research

Keywords: duopoly; imperfect competition; congestion; general equilibrium; airport competition;

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  1. Thorsten Fischer & David R. Kamerschen, 2003. "Price-Cost Margins in the US Airline Industry using a Conjectural Variation Approach," Journal of Transport Economics and Policy, London School of Economics and University of Bath, vol. 37(2), pages 227-259, May.
  2. Eric Pels & Erik Verhoef, 2003. "The Economics of Airport Congestion Pricing," Tinbergen Institute Discussion Papers 03-083/3, Tinbergen Institute.
  3. Lambertini, Luca, 1997. "Optimal Fiscal Regime in a Spatial Duopoly," Journal of Urban Economics, Elsevier, vol. 41(3), pages 407-420, May.
  4. Fujita, M. & Thisse, J.-F., . "Economics of agglomeration," CORE Discussion Papers RP -1250, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  5. Zhang, Anming & Zhang, Yimin, 1997. "Concession revenue and optimal airport pricing," Transportation Research Part E: Logistics and Transportation Review, Elsevier, vol. 33(4), pages 287-296, December.
  6. Van Dender, Kurt, 2005. "Duopoly Prices Under Congested Access," University of California Transportation Center, Working Papers qt7xw8c3fn, University of California Transportation Center.
  7. Jan K. Brueckner, 2002. "Airport Congestion When Carriers Have Market Power," American Economic Review, American Economic Association, vol. 92(5), pages 1357-1375, December.
  8. Kurt Van Dender, 2005. "Duopoly prices under congested access," Journal of Regional Science, Wiley Blackwell, vol. 45(2), pages 343-362.
  9. Barrett, Sean D., 2004. "How do the demands for airport services differ between full-service carriers and low-cost carriers?," Journal of Air Transport Management, Elsevier, vol. 10(1), pages 33-39.
  10. Pels, Eric & Nijkamp, Peter & Rietveld, Piet, 2003. "Access to and competition between airports: a case study for the San Francisco Bay area," Transportation Research Part A: Policy and Practice, Elsevier, vol. 37(1), pages 71-83, January.
  11. Hess, Stephane & Polak, John W., 2005. "Mixed logit modelling of airport choice in multi-airport regions," Journal of Air Transport Management, Elsevier, vol. 11(2), pages 59-68.
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Cited by:
  1. de Palma, André & Proost, Stef & van der Loo, Saskia, 2010. "Assessing transport investments - Towards a multi-purpose tool," Transportation Research Part B: Methodological, Elsevier, vol. 44(7), pages 834-849, August.

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