if your talking about salt, it only adds friction and therefore grip for vehicles, it doesnt stop them freezing
how does salt help roads not freeze
freezing?
For the lowering of the freezing point of water.
Salt will reduce the freezing point of water to below 32ºF, thus making it less likely to have slippery roads when temperatures are near the freezing point. This happens because of the colligative property of freezing point depression.
You can if the roads are clear.
The colligative property responsible for salting roads is freezing point depression. When salt (such as sodium chloride) is added to ice or snow, it lowers the freezing point of water, preventing the formation of ice and keeping roads safer in winter conditions. This effect allows the road surface to remain liquid at temperatures below the normal freezing point of water.
The freezing point of water is lowered because by dissolution salt release heat.
Adding salt the freezing point of water is lowered.
it melts
You can't stop it but you can slow it down by freezing it.
Anti gel at a truck stop...
you give it a blanket