if your talking about salt, it only adds friction and therefore grip for vehicles, it doesnt stop them freezing
Would you find potholes in the roads of regions where temperatures are above freezing all the time
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.
how does salt help roads not freeze
freezing?
For the lowering of the freezing point of water.
You can if the roads are clear.
Mechanical
The freezing point of water is lowered because by dissolution salt release heat.
it melts
Adding salt the freezing point of water is lowered.
You can't stop it but you can slow it down by freezing it.
Anti gel at a truck stop...