This chapter investigates Singapore's urban planning policy, spatial consequences of urban density distribution, new town planning and urban design driven by the transit oriented development (TOD) planning principles. In the case study of Singapore, we have observed a strongly articulated density distribution, pedestrian environment and transit ridership, which had effectively integrated the practice of public transit operation, land use planning and urban design. The pattern of Singapore's urban development has been influenced by the changing mode of urban transport and different ways of moving people in the city, to the modern automobile and road system, and to the mass rapid transit system (MRT) system. In Singapore, the government's initiative had significant influence on the TOD mode of planning as seen in the Concept Plan in 1970 and 1991 as well as a series of other policy and planning actions. The transit oriented urban design also played a significant role in the shaping of urban physical environment of Singapore.