A poor performance on this roadside test can cost plenty: it may help an officer justify an arrest, trigger towing and bond expenses, raise insurance problems, and become part of the evidence used to support a North Carolina DWI charge. The common myth is that failing it proves intoxication. It does not. A one leg stand test is a field sobriety test in which a person is told to stand on one foot, keep the other foot raised slightly off the ground, look at the raised foot, and count aloud for a set time while the officer watches for specific "clues" such as swaying, hopping, or putting the foot down.

That sounds simple, but roadside conditions are rarely ideal. Fatigue after a long crawl on I-77, uneven pavement, poor lighting, age, back or knee problems, inner-ear issues, footwear, nerves, and weather can all affect balance. Even completely sober people can struggle.

For an injury claim or criminal case, the real question is reliability. In North Carolina, this test is often used during a DWI investigation along with the walk-and-turn test, officer observations, and later a breath test or other chemical testing under the state's implied consent law, N.C. Gen. Stat. § 20-16.2. A shaky one leg stand result may support probable cause, but it is not automatic proof of impairment, and a defense lawyer may challenge how the officer instructed, scored, or recorded it.