underneath the big rig. >> the camry underneath the semitruck. >> reporter: authorities say one man was killed. ten others injured. including a 27-year-old woman who is critical. for hours, drivers on both sides of the freeway at a stand still. >> as we start closing things off. start collecting our evidence. we will then determine where the vehicles were driving and approximately how fast and what caused the collision. >> this investigation is still ongoing. the big question for authorities is, what caused that semitruck to jump over the center divider. completely going through the k rails set up to prevent accidents like this from ever happening. abc news, los angeles. >>> in addition to drinking, driving, growing concern on the country roads about drugged driving. for the first time, statistics show more drivers killed in crashes are now testing positive for drugs, than alcohol. the governors highway safety association points out increase