Abstract
In Japan’s tractor accidents, overturning is the main cause, which need to be prevented. We proposed a tractor behaviour model considering the effect of driving force on pitch angle and compared the simulation results using a conventional model. The accident prevention effect by driving force control was verified by a simulation using topographic information from a tractor overturn accident site. Simulation results indicated that the proposed model is suitable in analysing steep slopes, and driving force of the control model was smaller than that of the non-control model. These results clarified the need for a proposed model to assess pitching overturning risk and suggested that the attitude angle can be suppressed by controlling the driving force for preventing overturning accidents.