We're not all as high-tech as Alaska. In one of the tech magazines several years ago, it explained how Alaska DOT can plow when it is snowing so bad the driver can's see his/her hood ornament. GPS mapping of the exact lanes is done on a sunny day, with GPS error correction sent from a beacon at the airport. Following the GPS in the storm, plus infrared camera, radar, or both to warn the plow of something stopped in its lane keeps the highway clear.
Here in the lower 48, after we finish building stadiums with senators' names on them at taxpayer expense, there isn't enough tax money left over to outfit plow trucks with advanced technology. To save on DOT payroll, we got rid of the "wing men" who operate the plows while the driver drives over a decade ago. I think the legislators would stop plowing altogether if they thought they could still get re-elected.