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Development of deceleration intention indicating system of forward vehicle: Effect of the system

This paper proposes a deceleration intention indicating system, which indicates the shift to braking behavior of the leading vehicle before the brake maneuver is actually started. It aims to improve predictions and expectations by arousing attention for a following driver for a potential risk, and to reduce the risk of a rear-end collision by promoting early decelerating maneuvers. The method with Cover Brake pedal was designed in order to estimate deceleration intention with high certainty. Next, we performed the experiment to clarify effect of the system. The experimental results showed that the system was effective in improving accelerator release time (ART) and brake onset time (BOT) of the following driver.