https://www.eddrcorp.com/atssa-flagger/
Flagging is a critical job on a construction site. It is dangerous and stressful, with crews working mere feet from moving traffic. As a Flagger it is your responsibility to decrease risks to the entire construction crew and to the public as much as possible.
Topics include proper flagger equipment, when and where to apply flagger applications, and how to safely and effectively perform ATSSA flagger signals and duties. ATSSA is a recognized certification by the Department of Transportation and the course content follows the most recent Manual of Uniform Traffic Control Devices (MUTCD). This course satisfies Federal, State (Illinois) and Local flagger certification requirements.
If you work outside of Illinois, please verify if your state requires any additional certifications.