I'm fortunate to have good roads and friendly drivers. Never occurs to me to have any fear. There have been couple of cyclists killed on area roads, but the roads are also dotted with crosses commemorating deaths in auto accidents and that doesn't worry me when I'm driving. I get a few horns and hollers, but it's rare. If I had to put up with nasty drivers on a daily basis, it would definitely take a lot of the fun out riding and I might feel differently.