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.

• 具体包括：数据采集的范围，样本量的需求，事故数据、交通组成数据、路侧、接入口和路线数据采集的方法、数据处理方式等。