I did training rides on country roads that had speed limits of 45-50mph. There is one I was on that was 60mph, but I had a HUGE shoulder to ride on. I just got used to it really fast. Urban areas are bit crazier, but I'm far enough out where I start in an urban area, in 15-minutes I'm out in the country. haha

Wear good gear, use lights/reflectors, hold your line, use a mirror and take your lane when you need to. I found out early that hugging the curb only encourages impatient drivers to "squeeze" by you, typically at a good pace.

Oh and try your best, no matter how ******** drivers are, to avoid giving the 1-finger salute and shouting lots of profanity their way. It tends to encourage them.