Well, you can design the roads better. Two primary ways are used.
The first is material properties. For example, it's possible to make roads using asphalt mixtures which naturally prevent ice from forming. I've heard a rumor that the Autobahn is made of such a compound, but I can't find corroborating evidence right now.
The latter technique is used widely across the Midwest. I'm not certain about usage of the former, but road maintenance costs are significantly higher in the Midwest than other parts of the country thanks to multiple freeze-thaw cycles per year, so switching to a ice-mitigating compound may not be cost-effective when balancing multiple variables. If an ice-mitigating compound reduces roadway durability, you'll avoid it since you'll need to send a plow over the road anyways to clear the snow...
The first is material properties. For example, it's possible to make roads using asphalt mixtures which naturally prevent ice from forming. I've heard a rumor that the Autobahn is made of such a compound, but I can't find corroborating evidence right now.
The second is shaping the surface. For example, leaving parallel grooves in the driving surface increases traction. See the first picture at this link for an example: https://www.concreteconstruction.net/how-to/construction/con...
The latter technique is used widely across the Midwest. I'm not certain about usage of the former, but road maintenance costs are significantly higher in the Midwest than other parts of the country thanks to multiple freeze-thaw cycles per year, so switching to a ice-mitigating compound may not be cost-effective when balancing multiple variables. If an ice-mitigating compound reduces roadway durability, you'll avoid it since you'll need to send a plow over the road anyways to clear the snow...