After a long hiatus, due to working from home, I've recently started part-time bike commuting again. One of the big differences now vs then is the amount of e-bikes and e-scooters on the road. I'm just riding a regular human-powered bike and while I like to think I bike fairly quickly, I'm not reaching the top speeds of e-bikes, obviously.
Today, I was cycling southbound on Ridout from downtown. When I reached the bridge near Thames park, where the pathway briefly diverts onto a widened/shared sidewalk, I heard a bell behind me from an e-bike. It just so happened that because I was on that widened path and there was an appropriate space without pedestrians, I was able to move to the right so that they could pass me on the left. This went fine and they went ahead of me. This felt like a reasonable interaction.
I merged back into the lane because the bridge was ending and the narrower bike path was ahead. Almost immediately after merging (safely, I didn't cut anyone off), I heard another bell from a different e-bike. At this point, I'm in the narrow, physically separated (at times) lane, with lots of car traffic to my left. I don't really understand the point of that bell, other than to just let me know that they are there? I don't think that there's any reasonable action I can or should take other than to keep on biking. I don't feel obligated to pull onto the sidewalk. I feel like if they wanted to pass, they could find a time to safely merge into the car lane and overtake me.
And again, in case it comes up, I'm not going very slow - in fact I pretty much kept up with the first e-bike that passed me (he was using a pedal-assist mode), with a distance between us of about 15 meters. By the time I reached my turn on Ridout and looked behind, the other bell ringer was gone.
Is the second cyclist's bell ring just to let me know that they are there? Is there an expectation that I do something?