The following list is based upon research conducted by the National Highway Traffic Administration, which are symptoms that the police search for when hunting for DWI drivers:

  • Turning With a Wide Radius
  • Almost Striking Object or Vehicle
  • Weaving
  • Driving on Other Than Designated Highway
  • Swerving
  • Stopping Without Cause in Traffic Lane
  • Following Too Closely
  • Drifting
  • Braking Erratically
  • Signaling Inconsistent with Driving Actions
  • Slow Response to Traffic Signals
  • Turning Abruptly or Illegally
  • Accelerating or Decelerating Rapidly
  • Headlights Off