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The following is a list of symptoms in descending order of probability that the person observed is driving while intoxicated. The list is based upon research conducted by the National Highway Traffic Administration:     
 
 Turning With a Wide Radius 
 Straddling Center of Lane Marker.

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Bob Keefer: Virginia DWI DUI & Drunk Driving Lawyer representing people charged in Virginia with DWI DUI & Drunk Driving

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What do police officers look for when searching for drunk drivers on the highways?

 

A: The following is a list of symptoms in descending order of probability that the person observed is driving while intoxicated. The list is based upon research conducted by the National Highway Traffic Administration:

  • Turning With a Wide Radius
  • Straddling Center of Lane Marker.
  • "Appearing to be Drunk"
  • Almost Striking Object or Vehicle
  • Weaving
  • Driving on Other Than Designated Highway
  • Swerving
  • Speed More Than 10 mph Below Limit
  • Stopping Without Cause in Traffic Lane
  • Following Too Closely
  • Drifting
  • Tires on Center or Lane Marker
  • Braking Erratically
  • Driving into Opposing or Crossing Traffic
  • Signaling Inconsistent with Driving Actions
  • Slow Response to Traffic Signals
  • Stopping Inappropriately (Other Than in Lane)
  • Turning Abruptly or Illegally
  • Accelerating or Decelerating Rapidly
  • Headlights Off
  • Speeding, incidentally, is not a symptom of DUI; because of quicker judgment and reflexes, it may indicate sobriety.