For the first time this school year, buses have been cancelled right across the region because of snowy roads. 
That includes all zones 1 through 8 in Chatham-Kent and Sarnia Lambton.
Officials in Windsor-Essex have also pulled buses off the road.
Some parts of the municipality received 15cm of snow or more on Monday.
There isn’t expected to be much more accumulation today, maybe 2-4cm in some areas, but with winds gusting to 40 km/hr, visibility could be an issue as well.
Drivers are urged to use caution, take it slow, and make sure your vehicle is completely cleared of snow before hitting the road.