Head on car collision is when the front of two cars collide. While not very common, it can be some of the most dangerous and deadly accidents that occur on the road. Often times head on collisions are caused by people driving the wrong way, people who are drunk or otherwise disoriented, or somebody who is crossing the center line. Head on collisions, if due to the fault of another person, a law suit or a case can be brought to hold that person accountable for their actions.