Flagger how-to

How to Stop Traffic with a STOP/SLOW Paddle

Clear, consistent signals tell drivers exactly what to do.

Updated By the Career Education Institute Curriculum Team
Quick answer

Clear, consistent signals tell drivers exactly what to do. In short: stand; face; extend, then complete the remaining steps below.

Step by step

  1. Stand on the shoulder, visible to approaching traffic, never in the travel lane.

  2. Face traffic and show the STOP side of the paddle.

  3. Extend your free arm with palm toward traffic at shoulder height.

  4. Make eye contact with the first driver and wait until vehicles stop.

  5. Keep the paddle steady; don’t wave it.

  6. Stay alert for drivers who don’t stop and be ready to use your escape route.

Safety reminders for flaggers

  • Wear high-visibility apparel and a hard hat at all times
  • Never stand in an open lane of traffic
  • Always have an escape route planned
  • Stay off your phone and alert to approaching vehicles

MUTCD · STOP/SLOW paddle · Flagger station · Advance warning area · Transition area · Taper: see the full flagger glossary.

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