Wikipedia is of a different opinion:
https://en.wikipedia.org/wiki/Cycle_track:
A cycle track , separated bike lane [1] or protected bike lane (sometimes historically[2] referred to as a sidepath ) is an exclusive bikeway that has elements of a separated path and on-road bike lane. A cycle track is located within or next to the roadway, but is made distinct from both the sidewalk and general purpose roadway by vertical barriers or elevation differences.
For bikeways separated from other traffic only by painted markings, see bike lane.