Here's the bottom line—In urban settings, I think that even bike lanes that are well designed often create more problems than they solve. Thus, at this point, given the dozens of research articles and reports I have read from around the world, I strongly prefer the development of wide outside lanes with effective road signs, education, and enforcement rather than separate bike lanes in most cases.
If cyclists routinely hit speeds approaching or exceeding 20 mph (like on the downhill from Yates east on Shady Grove) bike lanes are too narrow to ride in safely—at high speeds cyclists need more room to operate than is offered by the standard 4 foot wide bike lane.
Many bike lanes are installed by planners who do not ride bikes and who do not understand the complexities of bicycling in urban traffic. Just lay down a stripe of paint within the legal limits and it is done-- a bike lane! It is a lot more complicated than that. So I am strongly against blindly rushing to paint stripes on roads when it will do no real good and might even make things worse.