Highways, Market Access and Spatial Sorting
研究了瑞士高速公路建设对城市人口规模和收入结构的影响，发现新高速公路接入使高收入居民比例长期增加24%，低收入居民比例减少8%，加剧了收入隔离并促进了城市蔓延。
Abstract We design a parsimonious spatial equilibrium model featuring workers embodied with heterogeneous skills and non-homothetic preferences. In equilibrium, locations with improved commuting access become relatively more attractive to high-income earners. We empirically analyse the effects of the construction of the Swiss highway network between 1960 and 2010 on the population size and composition of municipalities. We find that the advent of a new highway access led to a long-term 24% increase in the share of top-income taxpayers and a 8% decrease in the share of low-income taxpayers, impacting segregation by income. Highways also contributed to job and residential urban sprawl.