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GENERIC STEP-BY-STEP APPROACH STEP TWO

The most current demographic statistics on the target population for your accessibility study should be
obtained at the smallest area level possible. Ideally, this should be at the Small Area Level, which is the
smallest area for which census data is provided by Statistics South Africa.

Departments need to ensure that they have access to up-to-
date information on migratory trends and human settlement pat-

terns as well as demographic statistics for South Africa.

Road network data

Road datasets are available from National Geo-spatial Information of the Department of Rural Development
and Land Reform or from data providers within the private sector: An evaluation of these road datasets
should be done before making a final decision on selecting one for your accessibility study.

Ancillary data

High resolution earth observation data (satellite imagery) and areal imagery are used in fields such as
resource management and service infrastructure and development planning. The South African National
Space Agency (SANSA) has a single license, multi-user agreement with the suppliers of the SPOT imagery
(i.e. Airbus and Defence) that allows it to make this data available to government departments, organs
of state, as well as research and academic institutions. SANSA also provides training to departments to
assist them in using such data. Contact details are provided on the www.sansa.org.za website.

Figure 12: Examples of satellite imagery (SA National Space Agency)
Areal imagery and data on geographic features can also be obtained from the Directorate: National
Spatial Information Framework in the Department of Rural Development and Reform.

Spatial data on administrative boundaries can be obtained from the Municipal Demarcation Board,
Statistics SA and external data providers.

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