| Broadly speaking, urban infrastructure improvement includes projects carried out by the state or local government based on long-term plans over tens of years, and those aiming to be completed and become profitable within a relatively short period of 5-10 years. |
都市基盤におけるインフラ整備は大きく分けると、長々期的な計画の元に国家や地方公共団体が政策主導で行なう数十年単位のものと、5 -10年程度の間隔において比較的短期間に目標を達成して収益や効果を期待するものがある。 |