New Urbanism’s tenets are simple: Suburban life undermines a sense of community. People spend too much time in their own private space and in their automobiles. Communities should be built at much higher densities. People should be able to walk from their homes to stores.They should be able to hop on a bus or a rail line rather than take their car. Every town should have a vibrant and hip central area, and there should be open space between towns. Cities should grow mostly within existing urban boundaries. Each urban area would have a core, with growth occurring in an orderly diameter around it. Neighborhoods should be diverse, ethnically and economically.