I believe it will take a few generations. They'll probably make sub-optimal designs taking into account the local car culture. If they're lucky in 15 years they

I believe it will take a few generations. They'll probably make sub-optimal designs taking into account the local car culture. If they're lucky in 15 years they'll again have a mayor interested in advancing bicycling, and they'll improve the design, with car drivers more aware of bicycles by then. Repeat every time the roads are rebuilt. Other countries never seem to take the shortcut to a proven, optimal design. Not Invented Here syndrome.