Cross-over/Off-set crash information

I find myself now and again looking up information about the type of crash you were in. It's often referred to as a head-on collision, even though it isn't. It's also called an off-set crash which the tow yard called it and I wrote about it on the post titled "Your Car."
  I was looking it up again to see what are common reasons for people crossing the center line. Here are some: sudden onset of a medical condition, response to another unavoidable condition, distracted, impaired, asleep. I will probably add to this.

Here is some information from an article I found online, "Dissecting The Off-Set Crash, One of the Most Deadly Accidents on the Road":

To understand why an offset crash is so deadly, we must understand its two major effects. The first has to do with the crumple zone, the largest of which is the front of the car, where the majority of cars house the engine. The crumple zone is designed to proportionately deform upon impact to absorb the energy from a crash, thereby reducing the degree of injury to passengers and the likelihood of death from injury. Generally, the longer the front of the car, the slower the car decelerates in a frontal accident; the longer this slow-down period, the better for passengers and drivers. As part of the crumple zone, the frame rails that extend along each side of the engine help to decrease the rate of deceleration upon impact. In a normal frontal crash, if the rate of speed is high enough, the impact can have deleterious effects on the actual cabin of the car, pushing the front components of the vehicle inward. But when only a small percentage of the front of the car hits the stationary object or another car--the off-set crash--the impact can miss the frame rails and reduce the effectiveness of the crumple zone left to absorb the impact, and deceleration time decreases in milliseconds, which can be the arbiter of life and death.
   The second deadly effect of the offset crash involves rotation. The way the car "clips" an immobile object or another car causes almost instantaneous rotation after contact, moving occupants rapidly to the side as well as forward. In crashes where rotation comes into play, occupants miss or glance off the front airbags and hit the center console, the pillars, the doors, or the windows. Even if immediate death or external injuries don't occur, accident victims sometimes die after departing the accident due to internal injuries from hitting portions of the cabin. And it's not just about cranial contact, either. Having your body get slammed against a hard surface can easily cause internal bleeding that leads to death, if not immediately at the point of impact, then oftentimes hours later; these deaths are particularly acute in cases of off-set crashes.