highway maintenance gritter truck spreading de-icing salt, on the ice covered asphalt road during overcast day

access asphalt blizzard clear climate cold countryside covered dangerous day deicing drift drive driver equipment extreme frost frozen gray grit gritter highway ice icy lights machine maintenance orange overcast plough plow plowing road safety salt scrape season service slippery snow snowdrift snowfall snowplow snowstorm spray spreading transport transportation truck vehicle weather white winter work