Non-Standardized Field Sobriety Tests

Common Non-Standardized Field Sobriety Tests

1. Finger-to-Nose Test – The driver is asked to close their eyes, tilt their head back, and touch their finger to their nose. Officers observe for loss of balance, tremors, or inaccurate movements, which may indicate impairment.
2. Alphabet Test – The driver must recite the alphabet without singing, skipping letters, or losing focus. This test evaluates concentration, memory, and cognitive impairment due to alcohol or drugs.
3. Counting Backward Test – The driver is instructed to count backward from a specified number, testing attention, focus, and mental clarity.
4. Romberg Balance Test – The driver stands with feet together, closes their eyes, tilts their head back, and estimates 30 seconds. Officers look for swaying, loss of balance, or time distortion, all of which may suggest impairment.
5. Hand Pat Test – The driver repeatedly pats one hand on top of the other while alternating palm and backhand in rhythm. Officers assess coordination and motor control.

Challenging Non-Standardized Tests in DUI Defense

Unlike NHTSA-approved sobriety tests, these non-standardized field sobriety tests lack scientific validation and are more subjective in nature. Ooten Law challenges the reliability of these tests, arguing that nervousness, medical conditions, or poor instructions may lead to false signs of impairment.

If you have been arrested for DUI in Tennessee, Ooten Law provides aggressive DUI defense, fighting improper field sobriety test results and protecting your rights.

How Knoxville DUI Attorneys Review Non-Standardized Field Sobriety Tests

Non-standardized field sobriety tests may be used during a DUI investigation to give an officer additional information about a driver’s coordination, balance, memory, or ability to follow instructions.

A Knoxville DUI attorney may review how the test was explained, the conditions under which it was performed, and how the officer interpreted the driver’s response. Body-camera footage, dashboard-camera video, police reports, and other evidence may provide important context.

Ooten Law Firm provides DUI defense representation for individuals in Knoxville and throughout East Tennessee. When non-standardized field sobriety tests are part of a DUI arrest, our attorneys can review how those tests fit into the broader investigation.

Factors That Can Affect Performance on Roadside Tests

Performance on a roadside test may be influenced by circumstances unrelated to alcohol or drug impairment.

Depending on the individual and the testing conditions, relevant factors may include:

• Physical injuries or medical conditions
• Fatigue
• Anxiety or nervousness
• Uneven or sloped pavement
• Poor lighting
• Weather conditions
• Footwear
• Difficulty hearing or understanding instructions
• Distractions from traffic or emergency vehicles

These factors do not automatically invalidate a test, but they may be relevant when evaluating what an officer observed and how much weight should be placed on the result.

Non-Standardized Tests Compared With Standardized Field Sobriety Tests

Non-standardized roadside exercises are different from the three commonly recognized standardized field sobriety tests: the Horizontal Gaze Nystagmus, Walk-and-Turn, and One-Leg Stand tests.

Because non-standardized exercises do not follow the same standardized testing framework, a DUI defense attorney may closely examine the instructions given, how the test was administered, and how the officer reached conclusions about the driver’s performance.

The presence of a poor result on a roadside exercise does not by itself determine the outcome of a DUI case. The full investigation, including the traffic stop, officer observations, video evidence, chemical testing, and other circumstances, may need to be reviewed together.

Field Sobriety Tests, Chemical Testing, and Other DUI Evidence

Field sobriety tests are only one category of evidence that may be collected during a DUI investigation.

Depending on the circumstances, a case may also involve breath or blood testing and issues related to Tennessee’s implied consent law. Police may also rely on driving behavior, statements, physical observations, body-camera footage, or other evidence.

A DUI defense lawyer can compare the officer’s written conclusions with the available video and documentation to determine whether the evidence is consistent and whether additional issues should be examined.

DUI Defense for Knoxville and East Tennessee Drivers

Ooten Law Firm represents people facing DUI charges in Knoxville and surrounding East Tennessee communities, including Farragut, Powell, Oak Ridge, Clinton, Seymour, Maryville, and Sevierville.

The legal issues involved may vary based on the driver’s age, prior history, and the circumstances of the arrest. Ooten Law Firm also represents individuals facing a first DUI offense, multiple DUI offenses, and underage DUI allegations.

Speak With a Knoxville DUI Lawyer About Roadside Testing

If non-standardized field sobriety tests were used during your DUI investigation, an attorney can review the instructions, testing conditions, officer observations, available video, and other evidence involved in the case.

Contact Ooten Law Firm to schedule a consultation with a DUI lawyer serving Knoxville and East Tennessee.