Green Lane Project, April 2013
We define protected lanes as a bike lane that is separated from car travel lanes by some sort of physical barrier, and is separated from the sidewalk. The photo below is a protected bike lane. Note the plastic posts on the right and parked cars which separate it from the car travel lanes.
This is also a protected lane, since it has plastic posts separating it from the car travel lane. It is also painted green, but not all protected lanes are green, and not all green lanes are protected. Some cities are using green through intersections, or in regular or buffered bike lanes.
One last protected lane. It's separated from the car travel by a wider painted buffer and a row of parked cars.
This is a buffered bike lane, not a protected lane. It has a wider painted separation, but no physical protection from traffic.
We don't consider this a protected lane. We consider it a multi-use path. It is not an integral part of the roadway. While many of these facilities are great places to ride, they are not the focus of this survey.
Source: green lane project survey