Flagger training and certification requirements

From Virginia Work Area Protection Manual:
“Section 6E.01 Qualifications for Flaggers
Standard:
… …
02 The flagger shall be certified in accordance with the VDOT Flagger Certification Program, the American Traffic Safety Services Association Flagger Certification Program or any other VDOT approved flagger program. The flagger shall have his/her legible certification card with them at all times while performing flagging activities.
03 A flagger shall be recertified every two years if the flagger is certified by the VDOT Flagger Certification Program. Recertification is required every four years if the flagger is certified by the VDOT Basic or Intermediate Work Zone Traffic Control Training course, or by the ATSSA’s classroom Flagger Certification Program.”