There are multiple factors that contribute to deteriorating road conditions in South Africa, and the road freight industry cannot be held solely responsible, says Road Freight Association (RFA) CEO Gavin Kelly. The volume of cars, trucks and buses using the roads far exceeds the volumes of 30 to 50 years ago, as does the mass of trucks, buses, bakkies and trailers, with advances in design technology enabling them to carry heavier loads, he explains.