I've never really understood why people feel the need to hang a little sign in the back window of their car announcing to the world that they have a Baby on Board. Do they honestly think it will impact on the attitude and driving skills of other road users. Generally speaking, my own sense of self preservation and desire to protect my own vehicle tends to be a sufficient incentive to drive carefully. Not once have I ever felt the need to increase my speed or reduce the breaking distance between myself and the car in front, just because they lacked the aforementioned sign.
So what point exactly is the driver in front trying to make with such a proclamation? Is it an attempt to brag about their ability to procreate? People have demonstrated the ability to reproduce since the birth of mankind, and judging by some of the dross frequenting daytime chat shows, it clearly does not require any particular gifts or skills. If they feel the need to make such a public declaration, then perhaps their limited intelligence should exclude them from taking the wheel of a motor vehicle.
By the time I've pondered the conundrum and passed judgement, my mind is sufficiently distracted and it's a little too late!