Additional questions not addressed include how much it costs and how long it will last in outdoor weather.
The metro area where I live has probably spend $100Ks in green paint to make wide swaths of roads "bicycle zones".
I have not heard of any reduction in bicycle casualties as a result.
And it looks like they will need to come back every 2-3 years and re-paint them as the sold areas are wearing badly.
![](https://s-media-cache-ak0.pinimg.com/originals/35/ae/da/35aedabe2701200fe62a2d9e0e04a6ff.jpg)