The research objective is to assess the impacts resulting from the availability
and non-availability of infrastructure services on urban growth and development
under poverty; i.e. the extent to which infrastructure provision has stimulated
and will stimulate, or restrained and will restrain formal and informal urban
growth. The overall goal is to guide the given dynamic of urban expansion into
a more sustainable direction, considering the economic, ecological and social
implications in place and the legal and institutional framework and its capacity.
In analysing the impacts the following specific objectives will be observed:
- The first objective is to find out how infrastructure is supporting, moulding
and influencing urban growth and development. This leads to an analysis of urban
development and its driving forces regarding infrastructure and to an analysis
of land use development, the underlying choices and conflicts that emerge as
a result of varying infrastructure investments. The aim is to understand the citywide
distribution and patterns of informal settlement development and determine the
degree to which trunk infrastructure influences this pattern. To explain the major
driving forces of this development and the way they interact, a simulation model
will be developed and used to test alternative development paths and illustrate
- The second objective is to identify favour and taboo areas for future
urban expansion regarding land use (conflicts), potential and existing infrastructure
supply and sustainable city structures. This leads to a planning concept for future
urban development considering the weak impact of statutory planning and the dominance
of informal urban development processes and their driving forces.
- The third objective is to investigate how the supply of infrastructure
can be used as a tool to guide and to control urban development by strategic provision
of infrastructure in favour areas for urban development. This means to suggest
ways of intervening and exploiting opportunities emerging from infrastructure
provision for promoting coherent urban growth.
- The fourth objective is to develop and implement technical, legal and
financial solutions of infrastructure supply, which allow informal settlers to
connect to trunk infrastructure on the one hand in a safe and healthy way, and
on the other hand in a way, which allows cost recovery and easy maintenance. In
applying this model to the case study of Dar es Salaam, easy-to-connect infrastructure
nodes in strategically located areas will be provided in the defined favour areas
of urban development. Major elements of this concept are the co-operation of different
supply agencies especially in the use of the infrastructure lines and facilities,
the co-ordination of road construction with other infrastructure sectors (esp.
water and sewer mains), and the development of insular supply solutions on the
settlement level which can later be integrated in a city-wide network.
- The fifth objective is to develop and implement management measures on
the citywide level to secure better intersectoral co-operation between the municipal
agencies concerned with infrastructure provision and urban growth regulation
as well as between public and private actors and stakeholders. On the local level
management concepts will be developed to facilitate equal access to trunk infrastructure
and to secure cost recovery. Management concepts on the local level have also
to ensure equal distribution of services into the settlements and prevent misuse
of services and avoid land speculation. The project findings will be scaled up
and generalised to provide guidelines and best practices for the regulation of
rapid urban growth under poverty in other African countries.