Grey, P.; Behrens, R.; Southern African Transport Conference (32nd : 2013 : Pretoria, South Africa); Minister of Transport, South Africa; Behrens, R.; Cameron, Bill.; Froschauer, Pauline.
(July 2013)
Paper presented at the 32nd Annual Southern African Transport Conference 8-11 July 2013 "Transport and Sustainable Infrastructure", CSIR International Convention Centre, Pretoria, South Africa.