Flagger training and certification requirements

From Alaska Department of Transportation and Public Facilities Standard Specifications for Highway Construction:
“Flagging. Furnish trained and competent flaggers … …

a. Flaggers must be certified as one of the following:
b. Flagging Level I Certification by IMSA
c. Flagger Certification by ATSSA
d. Traffic Control Supervisor, ATSSA
e. Work Zone Safety Specialist, IMSA
f. ATSSA Flagging Instructor

Flaggers shall maintain current flagger certification. Flaggers must be able to show their flagger certification anytime they are on the project.“