[matt7aylor]

It may depend a little on where you are but generally on a cycle tour, where speed isn't such a priority, you don't tend to be taking the same bigger roads used by high speed cars or trucks (or may even be on routes largely separate from the roads). It can happen on occasion that you might want/need to go down a slightly busier road, in that case being a bit more of an odd road user (heavily loaded bicycle stands out) often you get a bit more consideration but a bit of road confidence certainly doesn't hurt.

I can't speak for everywhere but in Europe (where most of my experience is) I think you would be able to find plenty of routes without much traffic (checkout places like https://www.opencyclemap.org/ ) and ironically those routes would probably have much more to see on them than the routes that did have the cars and trucks on.