Urban development is also known as regional, town and city planning. It is the process of developing, planning and designing the land use in an urban setting. It also involves the development of transportation, distribution networks and communication channels in the urban area. The physical layout of human settlements is constructed, with emphasis on public welfare, sanitation and protection of the environment. Other significant considerations of this domain are sustainability, economic development, social equity, land value, etc. Sustainability refers to the process of using resources in a responsible manner in order to ensure their availability for potential needs of future generations. The judicious use of resources through urban planning is a major goal of sustainable development.