the constant increase in motorisation in all countries, the expanding international division of labour with the resultant increase in the exchange of goods, the increasing demand for international door-to-door services as industrialisation extends, the international container traffic, the enormous flows of traffic resulting from mass tourism.
Ulwando oluqhubeka qho lwemoto kumazwe nolwando lwentlukwano yamazwe ezemisebenzi lophumelo kulwando lotshintshwano ngempahla umnqweno omkhulu wamazwe kwinkozo zokungena umnyango nomyango njengezandiso zoshishino ingxinano yenkonxa zamazwe, ingxinano enkulu eyehlayo yenziwa lutyelelo kwelolizwe oluninzi