Originally Posted by
andrewclaus
In my drivers ed class we were taught to not "wave on" another driver. Then a couple of years later my brother was injured when someone kindly stopped for him, waved him on, then someone he couldn't see ran into his car.
I'll wave a following driver on in relaxed situations -- lightly traveled roads, I get around a corner or over a hill and see it's clear.
But as the lead vehicle, I've prevented a couple of accidents when I signaled "don't pass" to an overtaking vehicle when I
did see something ahead they hadn't seen yet. I don't hesitate to signal "NO" when appropriate.