sentences:  Even some minor accidents have been known to tie up traffic in this area, because there is little room to move accidents off or to the side of the road with the terrain.Speeding semi trucks have been a problem in the gorge and have subsequently led to many accidents.In 2002 and 2003, two state troopers were killed in two separate accidents by speeding trucks that drifted off the road and hit their police car conducting a traffic stop.