Okay, I ride dailey on the roads and bikepaths. I yell out "passing on the left" and have gotten many mixed reactions. Some people freeze up in the middle of the bikepath not knowing what to do. Others jump into the passing left lane right in front of you. Some turn around in amazement at seeing a bike. I realize that many people are regulars on the bike trail and know how to react, however, many others only visit occasionally and don't have the sense to stay on the right side of the trail. Dog walkers are another story I won't get into, but will only say they should not be allowed on the paved bike trails at all.
So last week I go for a walk unexpectantly on a paved bike path. Haven't done this in years. A few minutes into my walk I hear a faint bell and think what is that and before I know it a bike passed by me. Couple of minutes later a different sounding bell and another biker passes. Me, an avid cyclist was taken by surprise by both bikers. I don't have a bell on my bike. Most of the bikers passing me gave no warning. To my surprise maybe 15=-25% used a bell. NOBODY yelled out passing or bike approaching or gave any verbal warning!!! This was an education experience for me who again bikes every day. I know realize how dangerous it is even more so to pass someone on a bike trail.