| 摘要 |
PROBLEM TO BE SOLVED: To solve the following problem: when another vehicle enters a communication area of an optical beacon 100 from after one'own vehicle, there is a possibility that a road-vehicle communication device 11 of the own vehicle receives a DSSS (Driving Safety Support Systems) information signal transmitted from the optical beacon 100 in response to an uplink signal transmitted from a road-vehicle communication device 11 of the succeeding vehicle. SOLUTION: The road-vehicle communication device 11 receives the DSSS information signal until the number of received lane notification information signals becomes 20 that is twice the predetermined number of the lane notification information signals initially transmitted from the optical beacon 100. When the number of the received lane notification information signals becomes ≥20, the reception of the DSSS information signal transmitted from the optical beacon 100 is stopped. COPYRIGHT: (C)2011,JPO&INPIT
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