Originally Posted by commodorefork

Sounds like a crash in the making.

First, where is your bell/siren for alerting the pedestrians that you're about to pass? As you pointed out, if one of the walkers moves out of line while you're passing it could result in an accident.

If I were the rider going 10mph, I would stop and let the other cyclist pass. I wouldn't assume that he's going to observe any form of courtesy by slowing down . . . Take action yourself to prevent a wreck. That's my take.