Satisfying the demand for such goods is itself a source of growth. But, also, a reliable road creates tremendous additional activity, as trade increases between connected areas, and myriad businesses, restaurants, and hotels spring up along the way.
满足公共品需求本身就是增长的动力之一。非但如此，一条可靠的公路可以引来大量额外经济活动，如彼此通路区域之间的贸易增长和各种沿路开办的企业、餐厅和饭店。