NHTSA’s 24 Initial Visual DWI Detection Cues


The National Highway Traffic Safety Administration (NHTSA) identified 24 cues for police officers to detect nighttime impaired drivers.

24 Initial Visual DWI Detection Cues

  1. Weaving
  2. Weaving Across Lane Lines
  3. Straddling A Lane Line
  4. Swerving
  5. Turning With Wide Radius
  6. Drifting
  7. Almost Striking Object or Vehicle
  8. Stopping Problems (too far, too short, too jerky)
  9. Accelerating Or Decelerating Rapidly
  10. Varying Speed
  11. Slow Speed (10 m.p.h. + Under Limit)
  12. Driving In Opposing Lanes Or Wrong Way On One-Way Street
  13. Slow Response to Traffic Signals
  14. Slow Or Failure To Respond To Officer’s Signal’s
  15. Stopping in Lane for No Apparent Reason
  16. Driving Without Headlights At Night
  17. Failure to Signal or Signal Inconsistent with Action
  18. Following Too Closely
  19. Improper or Unsafe Lane Change
  20. Illegal or Improper Turn (too fast, jerky, sharp, etc.)
  21. Driving on Other Than Designated Roadway
  22. Stopping Inappropriately In Response To Officer
  23. Inappropriate Or Unusual Behavior (throwing objects, arguing, etc.)
  24. Appearing to be Impaired

The police officer may only have identified one, two, or even three of these cues as part of his probable cause to make the stop. Set an appointment to how this is good for your Missouri DWI case.