I'm fortunate, except for family fun rides on Sundays pulling my toddler in a baby trailer, I do all my riding on roads. But when we ride on our mup/river walk, I slow way down and pop the brake levers to get their attention. I go slow enough when passing that when I say on your left and they go left I have reasonable enough time to pass on the right. Also fortunately our mup is never really crowded. Although it's recently picked up with pokey mon seekers. Well at least they're outside walking and not inside playing a video game.