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This research proposes a methodology to effectively transmit probe data in terms of congestion detection. By using “short-trip (ST)” and “short-stop (SS)”, which represents a vehicle trajectory as piecewise linear shape in time-distance space, it is possible to detect congestion status of traffic with quick response. This allows us to transmit probe data en bloc within a transaction containing ST+ SS sequences only recorded in congested traffic conditions, and to reduce the cost with less number of data transmittal. We have validated the proposed methodology through IPCar probe experiment in Yokohama-city.