This accident may have been a case of driver fatigue or perhaps health related.
The tracks leaving the road were gradual and straight with no skid marks at all.
The area where it occurred is near the end of a very long stretch of highway bordered only by fields and wooded areas for miles, a fertile area for tunnelvision to occur.
More on Road Safety or on Forklift Safety or Optical Illusions, Web Animations, My Photography, or Truck Photos.
Oh yeah, you can check out my Smoke Tree too.