What does a railroad flagger do?

As a railroad flagger, sometimes known as a railroad flagman, you ensure the safety of crews working on or near a railroad track. During construction, repair, or maintenance projects, you stand near the railroad and signal the train operators to slow down or stop. Your exact duties vary depending on the railroad company you work for. In most positions, your responsibilities focus on working to protect construction and maintenance personnel by making sure the track is clear. You may hold a flag, activate a light or sign, or have radio contact with the train operator. You also contact special work crews by radio to obtain an all-clear signal.