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面向交通项目评估的定量城市模型

A quantitative urban model for transport appraisal
Journal of Public Economics · 2025 · Dániel Hörcher、Daniel J. Graham

中文摘要

理解大型交通基础设施项目的空间经济影响,对于促进现代经济中的有效资源配置至关重要。然而,当前交通政策的经济评估实践在很大程度上局限于局部均衡模型,这些模型仅孤立地关注交通市场,忽视了大规模干预所带来的变革性影响。本文以定量空间经济学——空间经济学文献中的一个新兴领域——的方法论原则为基础,设计了一种能够刻画交通供给与劳动力、生产及房地产市场之间相互作用的评估方法。我们的模型通过明确的闲暇—劳动权衡为出行时间价值提供微观基础,因此每个居住地—工作地组合都具有独特的出行时间价值。该模型具有可逆性,适用于以理论上和地理上一致的方式,对异质性区位选择偏好的离散程度、以及集聚力的强度与距离衰减进行因果估计。

Abstract

Understanding the spatial economic impacts of large-scale transport infrastructure projects is vital for promoting ecient resource allocation in modern economies. However, the current practice of economic evaluation in transport policy is largely conned to partial equilibrium models, which focus solely on transport markets in isolation, ignoring the transformative impact of large-scale interventions. In this paper, we build upon the methodological principles of quantitative spatial economics, an emerging eld within the spatial economics literature, to design an appraisal method that captures the interactions between transport supply and the labour, production and real estate markets. Our model features travel time valuations that are micro-founded through an explicit leisure-labour trade-o, making them unique to each residence-workplace pair. The model is invertible and suitable for the theoretically and geographically coherent causal estimation of the dispersion of idiosyncratic location choice preferences and the strength and distance decay of agglomeration forces.
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