Substitute Squall for 0 visibility FOG bank that hits when you're driving 65 miles an hour on a crowded interstate and are effectively immediately blinded like someone covered your windshield.
Yep. This wasn’t about road surface conditions as much as it was about visibility
BINGO...and visibility can drop from a mile or more to ZERO in seconds.
Skies were perfectly clear in the areas outside of the squalls yesterday.
Re: 6 - Fog can be deadly:
https://www.cbc.ca/news/canada/windsor/highway-401-fog-crash-1999-windsor-manning-road-1.5267759
https://en.wikipedia.org/wiki/1999_Ontario_Highway_401_crash
As a general rule, it can be a zoo on Provincial highways. I was hit from behind by a driver on the 403 just east of McMaster University. The moron slowed down, stopped for about 30 seconds then sped off, belching blue smoke. He broke down about 1 mile away with his Dodge Charger seriously wrecked - the car I was driving was totaled. The OPP officer told me it would have been much worse if it was a regular work day. Luckily that day was the May Two-Four, so very light traffic - except for the drunk who hit me.