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The research aims to explore the effects of transport infrastructure on economic disparities between cities in China.

April 16, 2026SustainabilityOpen Access

Impact of Transport Infrastructure on Regional Economic Synergy: Evidence from Chinese Cities

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The research aims to explore the effects of transport infrastructure on economic disparities between cities in China.
Constructed a comprehensive transport infrastructure service efficiency index.
Analyzed panel data from 297 prefecture-level cities from 2010 to 2023.
Investigated nonlinear impacts and mechanisms affecting economic disparities.
Identified an inverted U-shaped relationship between transport infrastructure and regional economic disparity.
Found that initial transport network expansion causes widening regional gaps due to agglomeration effects.
Established a threshold index (approximately 0.274) for transitioning from polarization to convergence effects.

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Analysis examines transport infrastructure's effect on economic disparities across Chinese cities, suggesting policy implications.

Jia et al. (2026) studied this question.

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