A traffic impact assessment (TIA) was requested in order to assess how Rio Tinto Rössing Uranium Limited's (Rössing Uranium) proposed mine expansion would affect the transportation infrastructure environment in which it operates. The effect of an increase in transportation needs due to the mine's expansion was assessed by investigating the current traffic conditions on the affected road network, the transportation of staff, and the transport logistics relating to the delivery of sulphuric acid. The assessment was conducted against the background of traffic growth in the network concerned in general, and the effect of imposed traffic due specifically to the direct influence that increased mining activities would have on the road network used by Rössing Uranium.