I'm sure some are also placed by scared mothers as a desperate measure to incite mercy from the speeders. And personally, I do believe in responsible driving but as Mike Shamrock said, we all are offenders and I drive recklessly sometimes and I am truly sorry for that. But the one thing that slows me right down is a car with that sign on it. I guess imagining a cute baby's face and the perilous environment it is in, brings out the human in me and hopefully others too:-)