Methods for data collection are introduced and their advantages and disadvantages are summarized, which covers the range of data collection, the requirement for swatch, accident data, traffic data, roadside data, driveway data, road lane data, and so on.
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- 具體包括：數據采集的范圍，樣本量的需求，事故數據、交通組成數據、路側、接入口和路線(xiàn)數據采集的方法、數據處理方式等。
