A Simulation Study on Cane Transport System Improvements in the Sezela Mill Area

Approximately 2.2 million tons of sugarcane is carted over a tons weighted average distance of 30 km in the Sezela mill area per annum. This costs more than R58 million per season. The Sezela cane transport system is comprised of approximately 120 independently managed vehicles owned by a wide range of hauliers and individual growers. This study investigated the potential savings that may occur as a result of a central fleet control system with integrated vehicle scheduling. A scheduling software package named ASICAM, which resulted in significant savings in the timber industry, was assessed within the Sezela region. Results suggested that the number of trucks in the fleet could immediately be cut back by at least 60%, provided that a central office controls vehicle movements and that all hauliers serve all growers in an equitable fashion. In addition, an investigation towards increasing payloads by reducing trailer tare mass showed further reductions in the number of trucks required. These adjustments will impact favourably on transport rates, queue times and uniform mill deliveries. Further research, however, is needed before the system can be implemented. This includes formulating scheduling and payment protocols and managing extreme supply/delivery periods, such as during run-away fires, frost and wet conditions.