亲缘交配;
The hazard degree of pedestrians' crossing is not only related to crossing conditions and crossing vehicles, but also related to traffic volume of the road and traffic distribution condition, transect form of road, attention condition of drivers.
行人过街的危险度不仅与过街条件、过街设施有关,而且与道路上的交通量及分布情况、道路的断面形式、驾驶员的注意状态有关。
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