The V2X service providing system in an unreceived area of a GPS signal according to an embodiment of the present invention receives probe vehicle information from a wave terminal provided in a vehicle existing in a preset communication area and transmits the received probe vehicle information to the outside And a traffic information providing server that receives probe vehicle information from the wave base station and provides vehicle speed information from the received probe vehicle information, and the traffic information providing server extracts and provides only vehicle speed information from the received probe vehicle information. By doing so, it is possible to reduce the time required to provide the traffic information and at the same time to accurately provide the traffic information for each point of the road, and to reduce the cost used to construct the traffic information providing system.
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