Painted Bike Lanes – Illusion of Safety?

Yes, we want cyclists to feel safe and a colored lane may provide this notion. However, are motorists going to maintain their lane, even with a painted cycling lane adjacent? Also, will motorist understand that, when necessary, a cyclist may have to exit the painted lane? Overall, I think colored bike lanes could be beneficial. But these reminders are geared towards motorists who simply need to view cyclists as vehicles. The results from the Portland blue bike lanes project, shared by TreeHugger, show “there has been a 20% increase in motorists yielding for cyclists due to visibility and awareness.” I would like to see a more robust survey that includes the motorists in the area, what are their perceptions of bike lanes and cyclists pre- and post- colored bike lane?