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Vibrations exist, both unnoticed and noticeably uncomfortable. It is also possible to transmit information by vibration. By clarifying the characteristics of these vibrations, clear information can be fully realized. The authors consider the improvement in the safety that becomes possible by the application of these vibrations as a driving support system. The steering wheel angle is determined by balancing the steering torque, or the driver's input, and the reaction torque. A clear relationship has not been made for these values. Subjective evaluation by a test driver experiment is carried out by evaluating every design object's drive feeling. There are many cases that experience and technical knowledge are needed in the subjective evaluation based on human senses. Therefore, technology that can objectively quantify physiological indexes is desirable.