A '''Transit metropolisesmetropolis''' is arean urbanized regionsregion with high-quality public transportation services and settlement patterns that are conducive to riding public transit. While Transit-oriented developments (TODs) focus on creating compact, mixed-use neighborhoods around rail stations, transit metropolises represent a regional constellation of TODs that benefit from having both trip origins and destinations oriented to public transport stations. In an effort to reduce mounting traffic congestion problems and improve environmental conditions, a number of Chinese mega-cities, including Beijing and Shenzhen, have embraced the transit metropolis model for guiding urban growth and public-transport investment decisions.
