Desirable ITS Communication for Safety: Evaluation by the <i>T</i>s<i>R</i>m Evaluation Method for Overengineering Prevention, and Discussion About Sensor and Communication Fusion

  • HASEBE Ikkei
    Division of Mathematics, Electronics and Informatics, Graduate School of Science and Engineering, Saitama University
  • HASEGAWA Takaaki
    Division of Mathematics, Electronics and Informatics, Graduate School of Science and Engineering, Saitama University

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<p>In this paper, for the purpose of clarifying the desired ITS information and communication systems considering both safety and social feasibility to prevention overengineering, using a microscopic traffic flow simulator, we discuss the required information acquisition rate of three types of safety driving support systems, that is, the sensor type and the communication type, the sensor and communication fusion type. Performances are evaluated from the viewpoint of preventing overengineering performance using the “TsRm evaluation method” that considers a vehicle approaching within the range of R meters within T seconds as the vehicle with a high possibility of collision, and that evaluates only those vehicles. The results show that regarding the communication radius and the sensing range, overengineering performance may be estimated when all vehicles in the evaluation area are used for evaluations without considering each vehicle's location, velocity and acceleration as in conventional evaluations. In addition, it is clarified that the sensor and communication fusion type system is advantageous by effectively complementing the defects of the sensor type systems and the communication type systems.</p>

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