The Southbound 15 freeway was closed recently after a fatal crash in the early morning hours of Sunday, Oct. 16. The wreck involved a semi-truck that crashed into a stalled vehicle. All lanes on the southbound part of the freeway were closed as police investigated the crash and cleaned up debris from the scene. One person was killed in the accident, but other than that, we don't have much in terms of details for this story.
Obviously that is going to lead to some speculation, but there are important speculative points to make. For example, given the hour of the crash, it is reasonable to ask about the mental state of the semi-truck driver. Was he or she tired or fatigued? Was he or she asleep at the wheel? Was he or she drunk or intoxicated in some way?