Abstract
An automatic platooning technology for energy-saving logistics utilizing intelligent transportation systems (ITS) technologies have been developed in the Energy-Saving ITS Project of Japan. The automatic platooning of trucks is studied to save energy consumption by reducing air resistance. Considering the experimental testing and practical application for automatic platooning, it is important to ensure driver safety, and high levels of safety and efficacy are required for truck braking systems. Therefore, a new brake system for automatic platooning needs to be developed. In this study, two approaches are proposed. One is to design a secondary brake system working in a fail situation with the main brake system, the other is to adjust for different maximum decelerations for the preceding and following trucks. In the first step, the proposed measure was investigated using an actual vehicle and a simulation experiment. Based on this, the proposed brake system was developed and mounted on the experimental trucks, and full brake testing was carried out to evaluate its effectiveness. The experimental result showed that the improved brake system was effective in ensuring brake safety by incorporating these functions in the trucks.
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