I definitely worry about bears in these places.
I don't want to get too far away from the subject of photography, but as a biologist type person who has worked on bear research I can tell you that you're under a much greater risk of life and limb driving down the highway. There's a lot of valuable information available on the 'net and probably from your local state or provincial wildlife agency about how to avoid and deal with bear interactions. Read up, take a few precautions and you'll be fine. Unless of course you get flattened by a tractor trailer on the way there (yes, I've been a truck driver too...)