No, that doesn't even make sense. They're there to encourage other drivers to drive safer around their kids. Obviously this doesn't do anything in practice, but overprotective parents will try anything.

Thanks, I was seriously attacked in yesterday's forum for suggesting that the baby-on-board sign has NOTHING TO DO WITH YOU (you being other drivers who hate them), and has everything to do with the parent driving safely. Could not believe how many people take it as a personal assault and think it is the driver…

baby on board is for emergency personel when the vehicle gets involved in an accident so that they know that there is another occupent in the vehicle - not to tell the world there is a kid onboard - smarten up