Yup, on the MUP I always tinkle with the bell or call out a good bit behind when approaching pedestrians, then slow down and prepare to stop until I can see how they're gonna respond. Oh, and smile and say thanks when I pass them after they pull to one side or the other, or both (groups will often split). My commute route takes me past a pre-school, a petting farm, an elementary school and an elder center. My route home via the gym takes me past a pre-school, two health facilities (one a psychiatric hospital and the other a training facility for young people with cp) a middle school and a high school. I also share both routes with hundreds of students, mostly unhelmeted and wearing ear buds. You really can't assume that the pedestrians I pass here will all know, or remember, the traffic rules. You can't even assume that they all know, or remember, what "right" and "left" mean. So the one "rule" that applies is that whoever's using the bigger, faster, harder vehicle -- in this instance, the bike -- is the one responsible for everybody's safety. The only times I allow myself to be upset about traffic on the MUP is when there are cars there (as is allowed in some situations) and they don't take that responsibility. Just the other day, a van driving off the campus from a construction site almost ran me over twice, first backing onto the MUP for a Y-turn off a pathway, then pulling forward towards the road right after I'd veered around him to keep him from backing into me. THAT was unacceptable!!!