Play Safe," reads the sign at a Fairfax County Public School playground in Virginia, just outside of Washington, D.C. The sign also lists a few simple rules—21 of them, by my count.

On Pittsburgh's South Side, KDKA-TV's cameras rolled as driver after driver treated the stop sign at South 22nd Street and Sidney Street as optional. From the mailman to a fire truck to a ...

“The signs say, please eat at a designated area. Do not allow your kids to eat on the playground. Wash your hands with soap and water,” Lindsay Spangler, Co-Founder of Red Sneakers Peoria, said.