When law enforcement officers suspect impaired driving, one of the first steps they often take is requesting field sobriety tests. These tests are designed to evaluate a driver’s balance, coordination, and ability to follow instructions, but they are not always accurate. Many drivers don’t realize how What’s a DWI during these roadside assessments can influence the trajectory of their case and the evidence used against them.
The three standardized field sobriety tests recognized by the National Highway Traffic Safety Administration (NHTSA) are the Horizontal Gaze Nystagmus test, the Walk-and-Turn test, and the One-Leg Stand test. Each is intended to detect signs of impairment, but none are foolproof. Physical conditions, nervousness, uneven pavement, poor lighting, or even certain medications can cause a driver to appear impaired when they are not. Despite this, law enforcement often treats performance on these tests as strong indicators of intoxication.
One key issue with field sobriety tests is subjectivity. Unlike chemical tests that measure blood alcohol concentration (BAC), sobriety tests rely on the officer’s judgment. This means that bias, stress, or simple error can heavily influence the results. An officer who already suspects impairment may interpret even minor missteps as confirmation of guilt, leading to an arrest and subsequent charges.
Another problem arises with drivers who have medical or physical limitations. Conditions such as inner ear disorders, back injuries, or mobility issues can make it difficult to balance or walk in a straight line. Even without alcohol or drugs in their system, these individuals may “fail” a test, creating misleading evidence. In such cases, it is critical for a defense attorney to present medical records or expert testimony that explains how the driver’s performance could be affected by health conditions rather than impairment.
Although field sobriety tests are optional in Georgia, many drivers are not aware of this fact. Officers are not required to inform individuals that they can decline to participate, and as a result, many people feel pressured to comply. Refusing the test, however, does not carry the same automatic penalties as refusing a chemical test. In some situations, it may be in the driver’s best interest to politely decline, especially if they are concerned about unfair evaluations or physical limitations.
In court, prosecutors often rely on field sobriety test results to strengthen their case. However, a skilled defense attorney can challenge the reliability of these tests by questioning the officer’s training, the conditions under which the test was conducted, or the interpretation of the results. Demonstrating that the evidence is flawed can weaken the prosecution’s argument and potentially lead to reduced charges or dismissal.
The attorneys at Kohn & Yager have extensive experience contesting field sobriety test evidence in DUI and DWI cases throughout Georgia. Their knowledge of both the law and the scientific limitations of these tests allows them to build strong defenses for their clients. If you are facing charges based on field sobriety test results, contacting Kohn & Yager may provide the strategic advantage you need to protect your future.
