part of street in city, pavement after heavy snowfall, wet snow melts, puddles, slush and mud impede movement of pedestrians and

accident asphalt bad city cold covered danger dangerous difficult dirt drive frost frosty grey hazardous ice melt melts messy mountain mud paving reagent risky road roadway route safe salt season shine sleet slippery slush snow snowfall snowing spell storm street surface track traffic transport transportation travel way weather winter