Flagger training and certification requirements

From Idaho Transportation Department Flagger and Traffic Control Supervisor (TCS) Certification and Reciprocity Information:
“FLAGGERS
ITD recognizes Flagger certification cards when taught using ITD approved courses by ITD approved instructors. Currently, ITD has approved the Flagger training courses from the Evergreen Safety Council (ESC) and ATSSA. The following institutions are approved by ITD to teach Flagger courses and provide certification:

College of Western Idaho, Center for Workforce Development ..…………………………..…. 208-562-3000
Treasure Valley Community College, Caldwell campus ..……………………………………… 208-454-9911
Idaho Technology Transfer (T2) Center (Government Agencies Only) ……………………….. 208-344-0565
College of Southern Idaho ………………….…………………………….……………………… 208-733-9554
Idaho State University …………………… ………………………………………..…………….. 208-282-0211
Lewis–Clark State College ……….………………………………………………..…….. …. ….. 208-792-2388
North Idaho College ………..…………………………..………………………….…….. … …… 208-769-3333
Eastern Idaho Technical College …………………………………………………………..  …… 208-524-3000

ITD participates in a multi-state Flagger Reciprocity Agreement with the State Departments of Transportation (DOT’s) of Washington, Oregon, and Montana, and a separate Flagger Reciprocity agreement between ITD and the Utah DOT. Flagger certifications from courses approved by these state DOT’s allows flaggers certified in those states to cross state lines for employment and work in Idaho.”