For the intents and purposes of the Washington state public works law, chapter 39.12 RCW, the scope of work for flaggers is as follows:

• Controls and directs pedestrian and vehicular traffic through construction projects using sign, hand and flag signals, warning paddles and radio communication.

• Informs drivers of detour routes through construction sites. Distributes signs, markers, flares, barricades, cones and other traffic control devices along construction sites in designated patterns.

• Is responsible for the safety of the workers and the public on construction sites.

• Must have completed a Washington state approved flagging course, or the equivalent.