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Imperfect competition and congestion in the City

By Andre de Palma and Stef Proost

Abstract

This paper presents a spatial model to study imperfect competition with congestion. The model is used to examine the price and wage setting of subcenters of a city. Residents live in a city while they shop and work in subcentres. Each subcenter o.ers one di.erentiated product and one di.erentiated workplace. Shopping and commuting from the city to the subcenter requires the use of transport infrastructure that can be congested. We show the existence of a Nash equilibrium in prices and wages and analyse the welfare impacts of congestion charging and infrastructure policies. This paper generalises the literature on imperfect competition with di.erentiated products as well as the literature on congestion pricing with imperfect competition.Road Pricing, Product Di.erentiation, Location Theory, New Economic Geography, Congestion.

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