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Field Sobriety Tests

Bakersfield Field Sobriety Tests

What are Field Sobriety Tests?

Field sobriety tests are used to assess a driver's level of intoxication when a law enforcement officer suspects that the person is under the influence of alcohol or drugs. These tests enable the officer to make roadside deductions of the driver's intoxication level.

The standardized field sobriety test approved by the National Highway Traffic Safety Administration (NHTSA) is a series of three tests that are systematically administered:

  • Horizontal Gaze Nystagmus (HGN)
  • Walk-and-Turn (WAT)
  • One-Leg Stand (OLS)

Arrested for a DUI? Get started on your case by contacting the experienced attorneys at Humphrey & Thompson today!

How to Fight Field Sobriety Test Results and DUI Charges

It is the responsibility of the law enforcement officer to ensure that the setting of the field sobriety testing is reasonably dry, level and not slippery. The officer should also make sure that there is enough room and adequate lighting to conduct the tests.

If this is not the case, then the officer should try to move and perform the tests elsewhere, and if they fail to do so this error could be in your favor in court. If the field sobriety tests are not performed in a systemized and reliable manner then there are ways to challenge the accuracy of the results.

Some of the factors that impact the reliability of the tests are:

  • Not alcohol related causes for performance failure (medications)
  • Brain damage or mental disabilities
  • Movement of the officer (supposed to remain motionless)
  • Suspect wearing unsuitable attire (heels, tight pants, baggy jeans)
  • Officer does not properly time the exercises
  • Failure of the officer to give adequate instructions
  • Preexisting physical or mental impairments (over 60 years old, sick, injured, hearing problems, overweight)
  • Environment settings (wet weather, poor lighting, uneven ground, other distractions)
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Let Humphrey & Thompson Fight for You

By calling a Bakersfield criminal defense attorney at our firm, you can receive proper representation to protect your rights. We have decades of experience in criminal defense law and can help you through the DUI process and the charges that were the result of a field sobriety test. The penalties for drunk driving are severe, so it is important to obtain experienced legal counsel for your DUI case.

Contact Humphrey & Thompson at if you are in need of an experienced Bakersfield DUI lawyer to fight for your freedom.

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