Article today on Planetizen http://ti.org/vaupdate30.html
Personally, I'm not a big fan of the conversion of one-way streets to two-way streets. Usually they don't take into account public transportation or a truck's turning radius (striping issues), loading and unloading trucks, etc.. Here in downtown Buffalo they have converted a few streets to 2-way and I don't think they've had the overall positive effect that many proponents have claimed. Oh and the claim that they'll help bring downtown business back .