I live in southeast Iowa this time of year and there are rural roads I will not ride on. Two lanes, no shoulder, and too much traffic. You just have to make a judgment about safety. However, there are rural paved roads around here that are safe enough to ride on, so I just have to pick my route carefully. I found that other cyclists had used MapMyRide and plotted out routes. You my end up having to drive a bit to find the safe roads. I am fortunate that I can get to several good routes out my door. The drivers in the part of the country tend to be polite and give you a wide berth. Maybe it is because they already have learned to share the road with the Amish.
Trek Madone 4.7 WSD
Cannondale Quick4
1969 Schwinn Collegiate, original owner
Terry Classic
Richard Feynman: “The first principle is that you must not fool yourself and you are the easiest person to fool.”