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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def infer_transportation_modes(self, dt_threshold=10):
 """In-place transportation inferring of segments Returns: This track """

        self.segments = [
            segment.infer_transportation_mode(dt_threshold=dt_threshold)
            for segment in self.segments
            ]
        return self