Notice how the path is in the most convenient place to walk relative to the crosswalk painted on the street and the dip in the curb. It looks like there should be a sidewalk here, but someone forgot to put it in. Instead of putting in a sidewalk, someone put in a sign to try to tell people not to walk on the grass.
T ake a hint from people's behavior.
If they find it convenient to walk in a particular place, put in a sidewalk, not a barrier. All rights reserved.