Can roadside DUI tests be challenged in court?

On Behalf of | Feb 24, 2025 | DUI

Law enforcement officers conduct different roadside tests to check if a driver operates a vehicle under the influence of alcohol or drugs. These tests help officers decide whether further testing, such as a breathalyzer or blood test, is necessary. The most common tests include the horizontal gaze nystagmus (HGN) test, the walk-and-turn test, and the one-leg stand test. Officers assess the driver’s balance, coordination, and ability to follow instructions. Failing these tests can result in a DUI arrest.

Factors that affect test accuracy

Several factors influence the accuracy of roadside sobriety tests. Poor lighting, uneven surfaces, weather conditions, and the driver’s physical health can all impact performance. Certain medical conditions, such as inner ear problems or neurological disorders, may cause balance issues unrelated to intoxication. Nervousness or fatigue can also make it difficult to complete these tasks correctly. Due to these factors, test results often lack reliability.

Challenging the results of roadside tests

Drivers can challenge roadside DUI test results in several ways. One common argument involves improper test administration. If the officer fails to give clear instructions or incorrectly demonstrates the test, the results lose validity. A driver can also argue that external factors, such as poor road conditions or medical issues, influenced performance.

Legal options after a DUI charge

A DUI charge does not guarantee a conviction. Drivers can contest the evidence in court. Attorneys analyze body camera footage, question test accuracy, and challenge the officer’s observations. Finding errors or inconsistencies can lead to case dismissal or charge reduction. Recognizing the weaknesses of roadside sobriety tests allows drivers to build a stronger defense against DUI charges.

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