SPATIAL COMPETITION, PRICING, AND MARKET POWER IN TRANSPORTATION: A DOMINANT FIRM MODEL*
构建了一个运输服务的主导企业模型，其中铁路公司具有市场势力但与卡车-驳船竞争，分析了定价行为如何受空间竞争影响，并扩展了模型以涵盖多市场、联合生产和产能约束。
ABSTRACT Transport firms compete over space. We develop a dominant firm model of transport services wherein one firm (the railroad) has market power, but competes in space with a competitive alternative (truck‐barge). When constrained, the dominant firm prices to “beat the competition”, which impedes efficiency when demand has some elasticity. We extend the basic model in a number of directions that include the relationship between monopoly prices and the generalized concavity of the shipper demand functions, the effects of multiple terminal markets, the role of joint production (fronthaul–backhaul markets), and the effects of capacity constraints.