I'm happy to see the parks department being proactive about this situation. Common courtesy on the trails should be a matter of common sense, but unfortunately there are far too many cyclists who don't seem to know the simple rules of the road and rather act as though walkers are in their way. A simple warning would probably suffice so this process of educating everyone is very useful.

My suggestion, however, would be to make the Walnut Street bridge for walkers only. Bicyclists could walk that distance until they reach a trail without so many children present. This area is clearly an accident waiting to happen.