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Abstract
This study focuses on examining the impact of transportation system accessibility and infrastructure quality on the macroeconomic performance, as reflected through indicators such as trade surplus, public debt, GDP, and inflation. The research findings indicate that transport infrastructure, particularly its quality, has a significant influence on macroeconomic indicators. Specifically, infrastructure quality positively affects GDP growth and trade surplus while contributing to inflation control. However, inadequate accessibility and inefficient infrastructure investment may lead to an increase in public debt. Public transportation accessibility demonstrates potential benefits for fiscal and trade stability, provided that it is well-planned. Consequently, policy should prioritize investment in high spillover infrastructure types such as expressways, seaports, and metro systems, with an emphasis on controlling investment costs and implementing effective capital recovery mechanisms. Additionally, infrastructure investment should be closely aligned with macroeconomic stabilization objectives.
Keywords: Infrastructure quality; Public transport; Accessibility; Macroeconomics; Green logistics.