Does no one understand what single file means anymore?
People get into a line on both sides of the sidewalk, so no one has to walk in the grass. I've had to walk in the grass thanks to large families who don't understand what single file means. Even adults don't like to get into a line so the person on the other side can pass comfortably on the sidewalk.
Sometimes when I'm jogging, there's a clump of Moms and strollers on the trail. One would think they'd move into a single file--and most of the time they do--but sometimes they remain in the clump so I get to, you guess it, run into the grass. And when you're running in the grass, sometimes there are sticks and rocks and I'd rather not go flat on my face.
So remember these two words: SINGLE. FILE. Teach your kids what it means.
No one should have to end up in the grass.