Highway to Success: The Impact of the Golden Quadrilateral Project for the Location and Performance of Indian Manufacturing
研究了印度金四边形高速公路升级对制造业活动组织与效率的影响，发现沿线制造业增长显著，新进入企业和现有企业共同推动产出增长，并改善了产业分布与资源配置效率。
We investigate the impact of transport infrastructure on the organisation and efficiency of manufacturing activity. The Golden Quadrilateral (GQ) project upgraded a central highway network in India. Manufacturing activity grew disproportionately along the network. These findings hold in straight-line IV frameworks and are not present on a second highway that was planned to be upgraded at the same time as GQ but subsequently delayed. Both entrants and incumbents facilitated the output growth, with scaling among entrants being important. The upgrades facilitated better industrial sorting along the network and improved the allocative efficiency of industries initially positioned on GQ.