Expand your knowledge of how portable traffic signals and pilot car operations on one-lane, two-way applications improve work zone safety for workers and road users. What are the limits of queue size? What is the practical length of the work zone? How is the traffic signal actuated and how is the green time controlled? In 2001, NIOSH published “Measures to Prevent Worker Injuries,” stating companies should “use alternatives to flaggers when traffic control is required under hazardous conditions…which limit driver visibility.” That was more than 20 years ago. It’s time for new alternatives to move Toward Zero Deaths!