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  UnsurfacedRoadway

Sigma KEE - UnsurfacedRoadway

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
没有铺面的巷道
UnsurfacedRoadway is the subclass of Roadways that have natural, unimproved surfaces of dirt or sand.
Relationships      
Parents 巷道 Roadway is the subclass of LandTransitways that are areas intended for surface travel by self-powered, wheeled vehicles, excluding those that travel on tracks. Roadways have been at least minimally improved to enable the passage of vehicles. Roadways include dirt and gravelled roads, paved streets, and expressways.


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