Alex asked: What do the statutes say about cyclists and pedestrians, particularly when a pedestrian enters a designated bicycle lane? What does it say when both are using a paved shoulder?
Bicycle lanes are part of the roadway and are intended for the exclusive use by bicyclists. Pedestrians are to use the shoulder and not the roadway, which is intended for use by vehicles.
Paved shoulders that are not marked as bike lanes can be used by both pedestrians and bicyclists.
There are many posts with all the applicable laws on this site that discuss bike lanes, paved shoulders and pedestrians use of same. Click on those subjects in the tag cloud.