As of April 1, 2021 only flaggers certified via in-person training are allowed to work on projects. However, flaggers certified through an ATSSA or Evergreen Safety Council online course prior to April 1, 2021 may continue to be allowed on projects under the certain conditions.

Read the full ITD Memorandum on Flagger Certification
https://itd.idaho.gov/wp-content/uploads/2020/09/FlaggerTrainingCertification.pdf

Similar guidance is now in place for Traffic Control Supervisors

Read the full ITD Memorandum on Traffic Control Supervisors
https://itd.idaho.gov/wp-content/uploads/2020/04/TCS_Temporary_Measures.pdf