Velocity decrease when opposing vehicles meet and velocity decrease scaled by average velocity without meeting for various road widths.

Velocity decrease when opposing vehicles meet and velocity decrease scaled by average velocity without meeting for various road widths.针对不同道路宽度，采集了两类车速降低数据：其一为对向车辆会车场景下的车速降低量，其二为以无会车场景下的平均车速对该车速降低量进行归一化后的结果。