Their children had safer means to get to school and friends houses. The more people observed these amenities, the more they utilized the trail. And the trails, everyone observed, were used year-round. Realistically, this is not going to happen, and most people realize this. If every person cut one trip a week in their car, say to the convenience store for a gallon of milk, it would decrease air pollution quite substantially within the region.
Money is saved on gas.
Wear and tear on the automobile is lessened. The destruction to the Ozone is decreased. Air becomes cleaner, making it easier for those with respiratory problems to breathe. There is not as much dirt generated, which means cleaning is not needed as frequently. In Towamencin, the trails don't just provide the opportunity for a nice walk, but also provide residents access to areas to observe nature and learn about environmental preservation.