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What are the signs of impaired driving that police look for?

On Behalf of | Jul 25, 2025 | DWI

Impaired driving is a serious offense that can endanger lives on the road. Law enforcement officers are trained to recognize signs of impaired driving. Understanding these signs can help you stay safe and avoid making any mistakes that could lead to dangerous situations or legal consequences.

Erratic or unsafe driving behavior

One of the most common signs that police look for in a DWI is erratic or unsafe driving. This includes weaving between lanes, swerving, tailgating, or driving too close to other vehicles. If a driver is unable to maintain a consistent speed or control their vehicle, officers may suspect impairment. Sudden stops, inconsistent braking, or making wide turns can also raise suspicion.

Difficulty with vehicle control

Impaired drivers often struggle to maintain control of their vehicles. Police may notice a car drifting in and out of lanes, slow or hesitant driving, or even the vehicle stopping unexpectedly in the middle of the road. These signs often suggest that the driver is struggling to focus or react properly due to impairment.

Inconsistent or improper signaling

When a driver fails to use turn signals or does so incorrectly, it can be a sign of impairment. Drivers under the influence may forget to signal before turning, use signals improperly, or fail to signal at all. Inconsistent signaling can suggest a lack of attention or control, both common signs of impairment.

Slurred speech and unsteady movements

Slurred speech and unsteady movements are also common signs that police look for when they suspect impaired driving. If a driver has difficulty speaking clearly, stumbling when walking, or showing signs of lack of coordination, it may suggest intoxication. These physical symptoms often prompt officers to conduct field sobriety tests.

Strong odors of alcohol

A strong odor of alcohol coming from a vehicle is a clear sign to law enforcement that a driver may be impaired. Officers will often ask drivers about the smell and may request a field sobriety test or breath test if they suspect alcohol use. A strong odor alone can provide reasonable suspicion to pull a driver over.

Police officers are trained to recognize the signs of impaired driving. These signs help officers determine whether a driver is under the influence of alcohol. Always drive responsibly to avoid dangerous situations and legal consequences.