Many people decide to have a ‘baby on board’ sticker in the rear window of their cars after having a baby – but it turns out many people had no idea it might not be there just to signal to other drivers that they should drive carefullyMany people decide to have a ‘baby on board’ sticker in the rear window of their cars after having a baby – but it turns out many people had no idea it might not be there just to signal to other drivers that they should drive carefully