The City has been creating and maintaining pedestrian and bike paths, a wonderful alternative to automobile travel. Since the right of way above was secured, the path has been modified:
a) a law was passed requiring dogs be leashed Friday-Monday
b) the path was paved
c) the path was striped
The physical modification, the pavement, has rendered the park more appealing to bikers and roller-bladers. Someday we will see a wheelchair (haven't seen one yet).
The symbolic modification, the white line, has not effected the behavior of out of control children and dogs. Adults typically make way for traffic approaching from the opposite direction. Of course, people with functioning brains reacted to oncoming traffic in such a way before the advent of the stripe.
The legal modification, the leash law, is a joke. Compliance is close to non-existent.
(If I was emperor of CHO I'd modify the leash law to include children under 10 and I would try enforcing this law one percent of the time.)