TOD could be in the form of singles or groups of TOD to provide different functional characteristics at different levels. TODs and other urban areas with different characteristics form urban spatial systems for socioeconomic functions based on local, regional, and global industry classification requirements. The integrated urban spatial systems provide a platform for various flows, including logistics, information, and financial. There will be different types of TODs at different dimensions, scales, and levels according to various characteristics for industrial, commercial, residential, and any other land uses needed and distributed at different locations.