Rollover events are easy to avoid: Slow down around corners. In over eight years of this, and every truck since my first Swift Volvo (after the Columbia) with rollover sensors, I have never set one off. I take some corners a little hard, but not hard enough to set off a CER. (Critical Event Recording) There are people in our little DC-specific dedicated WalMart fleet who set them off in the yard. The speed limit in the DC is 15 mph. I can take every corner in the place at 15 and not set off the sensor. When I hear about yet another guy setting off a rollover sensor in the yard, I feel like going up to the guy and shaking him and asking HOW??