The most recent underride which I have heard about involved a car driver, in Wisconsin, who ran a stop sign and consequently collided with the side of a tractor-trailer resulting in underride. There is speculation that alcohol might be a factor.

Man transported to hospital by MedFlight after crashing into semitruck, sheriff says

Unfortunately, this is exactly the kind of crash circumstance which undoubtedly has contributed to attitudes which blame the victim and neglect the underlying dangerous geometric mismatch between passenger vehicles and larger commercial motor vehicles. The result is that we have lost the opportunity to save lives by making truck crashes more survivable.

I have described this attitude along with other possible reasons why the underride problem has not been adequately addressed: A DIFFERENT STRATEGY To Achieve Underride Protection

“Mistakes happen on the road. The goal is to make sure that those mistakes don’t result in serious injury or death.” That’s what Eric Flack said he was told by the IIHS in one of the segments of his truck underride series.