 Although sunlight is generally not intense enough to cause this in polar and temperate regions, salt deposits must kept as far as possible from waterways to avert the possibility of cyanide-tainted runoff water entering fisheries or farms.Gritting vehicles are also dangerous to overtake; as grit is scattered across the entire roadway, loose pieces can damage the paintwork and windows of passing cars.Loose salt does not provide sufficient traction for motorcycles, which can lead to skidding, especially around corners.