Why is salt used to melt Ice on the roads in Winter?

Why is salt used to melt Ice on the roads in Winter?

Answer: Salt is often added to the ice when ice freezes on the road in winter. Mixing salt with ice creates an aqueous solution of salt. The freezing point of this solution drops below 0°C to about -22°C. So the ice melts. This is why salt is added to melt road ice in colder countries.