slippery winter road, sidewalk in the park, covered with ice and sprinkled with sand. anti-skid and safety on ice

sand road winter ice slippery anti chemicals snow park sidewalk street surface background salt outdoor texture abstract dirt icing pattern gray calcium chloride material asphalt nature white abrasive antislip deicing magnesium mud old roadway rough sodium cold weather close up track transport travel earth against icy conditions wallpaper covered sprinkled antiskid safety