Abstract: On December 14, 2007, Employee #1, a maintenance worker with the California Department of Transportation (Caltrans), was part of a three-man crew assigned to ride along I-5, looking for and filling in potholes. They found a large pothole in lane 2 at the base of the I-5 southbound exit ramp for Elk Grove Blvd. They parked both Caltrans trucks on the shoulder of the I-5 ramp, and a coworker took a lookout position. Employee #1 walked across the exit ramp, placed a shovelful of patch material into the pothole, and then headed back to the trucks. At this point, the lookout yelled at Employee #1, although it is not known if he heard the shout. A southbound semi-truck and trailer passed Employee #1, and seconds later, he started running across the exit ramp, toward the parked Caltrans trucks. He was about half-way across the ramp when he was struck by an F-150 pickup truck headed up the ramp. Employee #1 was pronounced dead at the scene.