A.1%至2%
B.2.5%至3.5%
C.2%至3%
D.3%至4%
A.1%至2%
B.2.5%至3.5%
C.2%至3%
D.3%至4%
A.1.5%
B.2.0%
C.2.5%
D.3.0%
A.路面颜色
B.路边绿化
C.行人流量
D.路面类型
A.1%至2%
B.1.5%至2.5%
C.2%至3%
D.2.5%至3.5%
A.3%
B.6%
C.9%
D.12%
A.雨季频繁的地区
B.干燥炎热的地区
C.冰雪覆盖的地区
D.温暖湿润的地区
A.4%
B.6%
C.8%
D.10%
A.3
B.4
C.5
D.6
A.5%
B.6%
C.7%
D.8%