Environmental, Health and Safety Services

Flagging Methods

Where to Stand

  • Stand facing traffic either on the edge of the shoulder of the road or in a barricaded lane just outside of the traffic lane.
  • Stand 200-300 feet from the end of the work area so as to be able to guard personnel or equipment. (Less spacing may be necessary in areas where conditions warrant.)
  • Stand where you can see, and be seen by, approaching traffic. The distance should be at least 500 feet.
  • Flagging stations shall be preceded by proper advance warning signs. Signs shall be removed when the flagger is no longer at his/her station. At night, flagging stations shall be adequately illuminated.

How to Stop Traffic

  • Stand facing traffic, but keep out of the traffic lane.
  • With a paddle, hold the STOP sign paddle in a stationary position witht he arm extended horizontally away from the body. The free arm shall be raised with the palm toward traffic.
  • With a flag, hold the staff in a horizontal position across the traffic lane. The free arm shall be raised with the palm of the hand toward approaching traffic.
  • If time permits, the flagger may inform the drivers of the reason for delay. Be courteous and brief. Do not lean on or touch the vehicles.

How to Move Traffic

  • With a paddle, stand facing traffic. Hold the SLOW sign paddle in a stationary position with the arm extended horizontally away from the body.
  • With a flag, stand parallel to traffic movement. Lower the flag behind the flagger and motion traffic to proceed with the free hand.
  • Never use a paddle or flag to signal traffic to move ahead.

How to Alert and Slow Traffic (but not stop it)

  • Stand facing traffic.
  • With a paddle, hold the SLOW sign paddle in a stationary position with the arm extended horizontally away from the body. For added emphasis, the flagger may raise and lower the free hand with the palm down.
  • With a flag, stand parallel to traffic movement. Lower the flag in front of the flagger and slowly motion up and down with the free hand, palm down.

Remember to never wave a paddle or flag. Signals must be clear and distinct. Use hand signals with devices, and don't make drivers guess what they should do.