Smart (modular) everything... A city like Washington, DC has rails that run from the city center to the ring road surrounding the city. Where the ring road intersects the rail lines there are parking structures. If the city expands the rails are extended, but the parking structures and ring roads that are not modular must be demolished and re-constructed at the new ends of the rail lines. With modular construction it is not necessary to demolish the parking and road structures, they can be moved one piece at a time.
Smart roads, homes, parking structures are built in the factory with power, water, heat, internet, sewage, IoT devices, etc. assembled into the modules at the factory. They snap together providing structural integrity and necessary services as a structure is assembled.
This approach allows Detroit to have a high-density core surrounded by rings of lower-density development. Early in the revitalization the city is small, but as the revitalization proceeds the core expands. Lower-density development does not need to be demolished to accommodate the expanding core, it is simply dis-assembled, moved away from the expanding core and reassembled further from the core. This allows the city to maintain a concentric ring plan but still expand. As the central core size and density increases, the modular roads in the core are disassembled, moved further from the city core and replaced by modular light-rail to accommodate greater transportation density. A further increase in transportation density is accomplished with modular subway construction. The approach allows the city to expand and contract without wasteful demolition of urban infrastructure. * Colorado Prepares to Install “Smart Road” Product by Integrated Roadways: https://spectrum.ieee.org/cars-that-think/transportation/infrastructure/colorado-prepares-to-install-smart-road-product-by-integrated-roadways * Take a peek at the space-efficient floor plans behind these modern shipping container homes: https://www.dwell.com/article/shipping-container-home-floor-plans-4fb04079 * New York’s modular building revolution is here: https://nypost.com/2018/09/13/new-yorks-modular-building-revolution-is-here/