Ключевые слова: asphalt, background, blacktop, break, city, cityscape, concrete, construction, crack, damage, danger, fall, footpath, frost, frost heaves, gap, grass, ground, hazard, heave, highway, house, insurance, jack, jacking, landscape, lane, level, liability, lift, mud, outdoor, park, paved, pavement, residential, road, rock, sidewalk, street, summer, surface, texture, trip, tripping hazard, urban, walk, walkway, way,