Cyclists pedal scared on Triangle roads

The Raleigh News and Observer ran an article today titled Cyclists pedal scared on Triangle roads. I also heard a story this morning on a local radio show where the DJs were discussing how they would love to ride their bikes to work but that they would not take the chance because the roads are so dangerous. A few people also called in and said they only ride their bikes on the greenway systems, but would also love to ride to work, for the exercise, to save on gas and other expenses of operating an automobile.

Can someone out there tell me why it is that two wheeled vehicles do not have their own infrastructure? It is almost as if no one in the US has even considered this very simple idea.