A traffic stop can shift quickly when an officer asks you to step out of your vehicle and perform roadside sobriety exercises. The purpose of field sobriety tests in Reno DUI cases is to gather observations that may support probable cause for an arrest. However, they do not measure blood alcohol concentration and do not establish impairment by themselves.
If you are facing a charge, a DUI defense attorney can examine how the officer gave instructions and scored your movements. The Law Office of John Arrascada will review that process directly, identifying weaknesses in the state’s account and determining how the roadside evidence fits with the rest of your case.
Nevada officers commonly use three standardized exercises: the horizontal gaze nystagmus test, the walk-and-turn, and the one-leg-stand. These divided attention exercises ask you to process instructions while completing physical tasks. The officer watches for designated clues and records an opinion about your performance. That opinion may influence an arrest decision, but it remains an interpretation rather than a scientific measurement of impairment.
Roadside sobriety exercises in Reno DUI cases require scrutiny because proper administration matters. The instructions must be understandable, and the demonstrations and scoring must follow the method the officer claims to use. Video may show that you followed directions more successfully than the report suggests. It may also reveal interruptions or poor positioning, along with conclusions that do not match what occurred.
A roadside exercise does not take place in a controlled setting. Fatigue or a medical condition may affect balance and coordination. Footwear can make turning or standing on one leg more difficult. Uneven pavement and severe weather may alter your movements. Traffic distractions or anxiety can also affect how you hear instructions and respond.
In Reno DUI cases, roadside sobriety testing results depend heavily on context and officer interpretation. A skilled lawyer can compare the report with body-camera and dash-camera footage, then weigh it against dispatch records and any witness accounts. The defense can also examine whether the officer accounted for physical limitations before assigning clues. A result based on incomplete instructions or subjective scoring is open to challenge.
The timing of the officer’s observations also matters. A report written after an arrest may use broad conclusions without explaining what the officer actually saw. Mr. Arrascada will look for missing details and inconsistencies between the reports and the recordings, as well as indications that the officer treated ordinary movements as evidence supporting a predetermined conclusion.
You may decline roadside exercises in Nevada. Declining these tests is different from refusing an evidentiary breath or blood test. Under Nevada Revised Statutes § 484C.160, implied consent concerns chemical testing after an officer has the required basis to request it. It does not convert roadside exercises into mandatory tests.
In a Reno DUI case, field sobriety exercises represent only one category of evidence. State DUI allegations generally focus on claimed impairment or a blood alcohol concentration of 0.08 or higher, with lower thresholds applying in specified circumstances. The prosecution may also rely on:
An experienced lawyer can evaluate each component for its reliability and how it fits within the full timeline of events.
Individuals should never treat field sobriety tests in Reno DUI cases as automatic proof of an offense. Their value depends on the setting, the officer’s training, whether the instructions were proper, and whether the written conclusions match the recording. A focused defense can expose gaps between the officer’s opinion and the objective evidence.
Contact the Law Office of John Arrascada to discuss your charge. John Arrascada is a highly respected, experienced advocate who handles the work personally and can give you a direct assessment of the case. He will examine the stop, challenge unsupported conclusions, and build a defense strategy grounded in the evidence.
(775) 310-0084 