Whenever there's a hazard on the road, there's usually a sign to tell you about it. Like a curve warning or a "Right Of Way" sign, "Narrow Bridge", "Signals Ahead", "Do Not Enter", "No Passing", and many others.
[after a long lecture on how small mistakes can lead to catastrophes, the accident approaches with Frank Jr. turning around completely in his car seat to wave at his brother behind him, and keeping this up for nearly a minute without paying any attention to the road ahead]
SAServo [as Frank Jr.]
Hey, the cop never said anything about doing intensely stupid things!
Hi. I'm Trooper Tom Servo. Well, I've seen it all, stared into the gapin' maw of death, and I'm here to remind you of the horror that lurks everywhere. No, don't get up. You young people can take things for granted, such as your sandwiches. Oh, I know, you're just going to eat that sandwich a little bit, with a little bit of mayo, and a little bit of hard salami.
Listen, brother! Nearly forty... uh, forty percent of all accidents, represent, uh, nearly half of all accidents. But who cares? Have fun with your lint trap! Nothing will happen to you. It will happen to the other guy!
Well why do I even bother with the brainless gibbons who live in this stinking hole of a town?! Well, I wash my hands of it, brother! Pah! [wanders off, muttering]