We did see some very large bears by the highway about four years ago while crossing the Rockies from Alberta to B.C. They could have been grizzlies. I didn't get out of the car to make sure.
AFAIK, there are no Grizzlies in the CONUS only Alaska. Their cousins the Browns are a different story.
I am so glad we do not live in bear country I would be scared to go outside. Lol!
It is one thing if you are hunting them and you are armed, another if you are taking out the trash etc........
I was going to tell you a quick way to tell if they are black or grizzly. A grizzly has a hump on his back above his shoulders but you probably already knew that ; )