Traffic Lanes:, Main road lanes where vehicles travel, usually two or more in each direction., Median Strip:, Area separating traffic moving in opposite directions, often grassed or concreted., Shoulder:, Strip beside the traffic lane used for breakdowns or emergencies., Safety Barrier:, Steel or concrete barriers that prevent vehicles from leaving the road., Drainage Ditch:, Channels that collect rainwater and stop flooding., Sound Barriers:, Tall walls that reduce traffic noise for nearby homes., Lighting Poles:, Tall lights that illuminate the freeway at night., Vegetation Zone:, Grass or trees planted beside or in the median for appearance and erosion control., Subsurface Layers:, Base and subgrade layers that support the road surface., Footpath:, Shared-use paths for pedestrians and cyclists alongside the freeway..

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