How Officers Score and Interpret Field Sobriety Tests in Georgia
A DUI report may say that a driver “failed” the field sobriety tests, making the roadside evaluation sound like an exam with a clear passing score. Standardized field sobriety testing works differently. Officers are trained to watch for defined clues during particular exercises, record what they observe, and consider those observations with the rest of the investigation. NHTSA training materials expressly describe standardized field sobriety tests as tools for observing visible signs of impairment rather than pass-or-fail tests.
That distinction can become important after an Atlanta DUI arrest. A short statement in a police report may leave out how an exercise was demonstrated, which specific clues the officer recorded, and what the video actually shows. Working with an experienced Atlanta field sobriety test lawyer can bring the roadside evaluation back to the individual observations that produced the officer’s conclusion.
What Officers Actually Record During Standardized Tests
The standardized field sobriety test battery generally includes the horizontal gaze nystagmus test, the walk-and-turn, and the one-leg stand. Each uses its own observations. During HGN, an officer looks for three types of eye movement in each eye, producing as many as six clues. The walk-and-turn has eight recognized clues, while the one-leg stand has four. Georgia appellate decisions routinely describe test results in terms of the number of clues observed rather than a simple pass or fail.
On the walk-and-turn, an officer may record such actions as beginning before the instructions are complete, stopping while walking, missing heel-to-toe contact, stepping off the line, using the arms for balance, making an improper turn, or taking the wrong number of steps. NHTSA’s guidance gives those observations specific meanings. A gap between the heel and toe, for instance, must reach a defined distance before the corresponding clue is recorded. An arm movement used for balance likewise has a specified threshold.
The one-leg stand follows the same clue-based approach. Officers watch for swaying, raising the arms for balance, hopping, and putting the raised foot down. NHTSA training distinguishes noticeable swaying from slight tremors and instructs officers to continue the evaluation when a foot touches the ground rather than treating that movement as the automatic end of the exercise.
Small Details Can Change How a Clue Is Scored
A roadside movement may look significant when described in a few words. The underlying scoring guidance can give it a more precise meaning.
Someone who walks slowly has not necessarily produced the clue for “stops while walking.” Moving an arm slightly away from the body does not automatically qualify as using the arms for balance under the standardized criteria. A person may sway during the walk-and-turn instructions without breaking the required heel-to-toe position, and NHTSA guidance distinguishes that movement from losing the instructional stance.
These distinctions explain why an observation deserves more attention than the label eventually attached to it. An officer may reasonably record a clue based on what was seen at roadside, while video can later provide a much better opportunity to examine the movement itself. The camera may show its duration, degree, timing, and relationship to the officer’s instructions in a way that a sentence written after the arrest cannot.
Arrest Narratives Often Compress Several Minutes Into a Few Words
Police reports have a practical purpose. They summarize an investigation that may include driving behavior, the initial conversation at the window, statements about alcohol, physical observations, field sobriety exercises, and additional testing. That process can turn several minutes of roadside activity into a phrase such as “displayed multiple clues of impairment” or “failed standardized field sobriety tests.”
The shorthand leaves important details behind. A report may identify the number of clues without explaining exactly where each one occurred. It may describe an improper turn without showing how the turn differed from the demonstration. A sentence about balance may sound much more dramatic on paper than the movement visible on body-camera or dash-camera footage.
The sequence also deserves attention. Instructions and demonstrations form part of standardized administration. A driver who starts walking early can receive a clue when the officer clearly instructed the driver to wait. NHTSA training specifically ties that clue to the instruction that must precede it. Similar details appear throughout the standardized protocols.
Video Can Put the Officer’s Interpretation Back Into Context
Body-camera and dash-camera recordings allow the field sobriety portion of a DUI investigation to be reviewed in real time. The footage can show the officer’s instructions, the demonstration, the surface where the driver stood, the driver’s questions or responses, and the actual movements later summarized in the written report.
The surroundings can also become part of that review. NHTSA training instructs officers to consider factors such as the testing location, physical limitations, and footwear when administering the walk-and-turn. The guidance also calls for checking for physical problems or disabilities before certain exercises. These considerations do not predetermine what a recorded clue means. They provide context for evaluating why the movement occurred and how much weight the observation deserves.
A careful video review can also reveal performance that receives little attention in the report. A driver may follow most instructions, correctly complete substantial portions of an exercise, communicate clearly, or maintain balance during portions of the test. Those moments remain part of the encounter even when the arrest narrative concentrates on the clues the officer considered significant.
Georgia Courts Recognize Important Differences Among Field Sobriety Tests
How a field sobriety exercise was administered can affect the later evaluation of that evidence. In the 2025 Georgia Court of Appeals decision State v. Chambers, the court addressed challenges involving HGN, the walk-and-turn, and the one-leg stand. The court treated HGN differently from the two physical dexterity exercises and upheld the exclusion of the HGN evidence where the officer had failed to medically qualify the driver before administering it after a collision.
For the walk-and-turn and one-leg stand, the court explained that problems with administration generally affect the weight given to the observations rather than automatically making the evidence inadmissible. That distinction makes the underlying facts especially important. A defense review can compare what the officer said happened with the instructions that were given, the movements actually visible on video, and the specific criteria used to record each clue.
The Clues Still Have to Fit the DUI Allegation
Georgia’s DUI statute, O.C.G.A. § 40-6-391, includes driving under the influence of alcohol to the extent that a person is less safe to drive. Field sobriety observations can become part of the evidence offered to support that allegation, along with driving behavior, statements, physical observations, and chemical testing when available.
Calling an exercise a “failure” can obscure the more useful inquiry into what occurred at roadside. The number of recorded clues is one part of that inquiry. The manner in which the exercises were administered, the officer’s interpretation of particular movements, the available video, and the driver’s performance throughout the encounter can provide a much fuller picture.
Careful review by an Atlanta field sobriety test lawyer can focus on the specific observations behind the report and how accurately the written narrative reflects what occurred. That closer examination can be particularly important when a few words in an arrest report make the roadside performance sound more conclusive than the underlying footage.
Contact The Spizman Firm Today
A DUI arrest can leave you wondering how a brief roadside exercise became evidence that you were impaired. Field sobriety testing contains far more detail than the word “failed” suggests, and the video, instructions, recorded clues, and officer’s testimony can each affect how that evidence is understood.
If you were arrested after performing roadside sobriety exercises in Atlanta or elsewhere in Georgia, contact The Spizman Firm today to speak with an experienced Atlanta field sobriety test lawyer and learn how the field sobriety evidence in your case may be evaluated.
Sources:
National Highway Traffic Safety Administration, DWI Detection and Standardized Field Sobriety Testing Refresher Manual
State v. Chambers, Georgia Court of Appeals, A25A1301 (Sept. 30, 2025)
Georgia Code § 40-6-391 — Driving Under the Influence