noun
multi-level road system; system allowing highways and buildings in the same space
A legal and urban planning concept in Japan that permits the construction of roads and buildings in the same three-dimensional space, often with elevated or underground roads integrated into structures.
立体道路制度を活用して、高速道路の上に商業施設が建設された。
Using the multi-level road system, a commercial facility was built above the expressway.
Compound of 立体 (three-dimensional), 道路 (road), and 制度 (system). The term refers to a specific Japanese legal framework established to allow integrated development of roads and buildings in the same spatial footprint.