From 2011 Delaware Department of Transportation (DelDOT) Manual on Uniform Traffic Control Devices (MUTCD), Chapter 6E – Flagger Control:
“All flaggers working on state-maintained roadways, except for emergency personnel and law enforcement officers, shall be certified by a DelDOT-recognized flagger certification program. All flaggers, except for emergency personnel and law enforcement officers, shall be required to carry a flagger certification card and photo identification on their person at all times.”
The American Traffic Safety Services Association (ATSSA) flagger certification training programs are the approved programs. The flagger certification trainers must be approved by the DelDOT Safety Section. All certified flaggers must appear in the ATSSA database for certified flaggers.