These realities lead some advocates in developing countries to question the logic of promoting megacities. Air, water and noise pollution: Pollution results from years of uncontrolled, unregulated industrial production.
As these vehicles move at different top speeds and with different maneuverability they can block each others flow. Strategies for meeting housing needs include upgrading projects and core housing projects.But essentially megacities in developing countries should be seen for what they are: a tragic replaying of the worst aspects of the mass urbanization that occurred previously in the West. This project aims at providing tracts of urban land, which are divided into plots, and provided with basic support services, for example electricity, water and sanitation. Air and water pollution results in health problems. However, as discussed above in the challenges associated with a lack of access to housing and shelter, there are great limitations to the implementation of site and service projects, including the reality that governments have not been active in promoting change to improve the living standards of residents to informal housing arrangements. These houses have unsafe infrastructure as the building materials used are all makeshift and unstable, making their living environments hazardous. Megacities also have options for significant gains from wastewater treatment and loss reduction from leaking infrastrucure. But access to the wonders of transportation and "information technology" is unlikely to compensate for physical conditions that are demonstrably worse than those my mother endured. The development of the MetroBus allows the bus to run from North to South Mexico City in a separate lane to other traffic, with its own stations for people to get on and off at various stops this method of public transport has been seen as a great success, now moving passengers per day, replacing micro busses which were highly polluting. This form of housing leads to lack of tenure and a lack of utilities available for these people to use, including basic needs such as food and water, rubbish collection, provision of sewerage and the lack of services and utilities. This issue of transport continues to grow due to the lack of maintenance on the roads, lack of space allocated to roads, poor modes of public transport and the lack of financial resources that the government has to provide infrastructure for improvement of these roads.
However, informal economic activity frequently a large part of the economy. Health and Nutrition Problems: Increased poverty leads to a decline in living standards and leads to infectious and parasitic diseases, deficiencies in the physical environment.
Poor village dwellers in Bihar may not all stay in the countryside, but they -- and many better-skilled immigrants -- may find other, less intense urban options. More serious still, the slum-dwellers face a host of health challenges that recall the degradations of Dickensian London. The slum redevelopment project has divided Dharavi into 5 sectors and requested proposals from real estate investors around the world to provide a sqf flat to each family that can prove they have been settled in Dharavi before the yearin exchange for their re housing, the builders get construction rights in Dharavi.