Abstract: On September 24, 2012, Employee #1 and a crew were installing reflectors on the middle white line of an interstate. They had a signaling truck on the left shoulder of the road with an attenuator stating left lane closed ahead. Additionally, they also had another truck with a crash bumper and attenuator with arrows pointing to the right and left lane closed sign. A Tennessee state highway patrol vehicle was located in front of this truck with its blue lights activated. The last vehicle in the line was a pickup truck, which the employees used to conduct their work. Employee #1, the driver of the second truck, helped the crew changed and glued reflectors. He was standing between the two trucks. At this time, a tractor-trailer was traveling north on the interstate and passed the first vehicle. The tractor-trailer hit the second vehicle in the rear. It then struck the patrol car in the rear and stopped in the median. Employee #1 was struck by one of the vehicles involved in the collision and was thrown under the pickup truck and killed.