The issue here isn't whether you feel safe, the issue is whether a local government has the right to restrict one type of vehicular traffic on a public roadway where there are no minimum speeds.

If the roads are unsafe because the 55 mph speed limit doesn't give you time to stop when you come around a curve or crest a hill, then the speed limit is too high. There could be a slow moving tractor, a slow moving car, a deer, a dog, a person walking, a child. . . many things besides a bicycle. Prohibiting a bicycle does not solve the problem. If the road is unsafe. It is unsafe for everyone.

There are many roads in my area that I, as a cyclist, do not like to ride and avoid. However, I also know people who ride them because they live there. It is the road they need to use to get from point A to point B. They have to use the road. I am concerned for them. I feel for them. But, because that is, in effect, their road, I will support their right to use it.