What is the first phase of OWI detection?

The first phase of OWI (Operating While Intoxicated) detection is focused on the vehicle in motion. During this phase, law enforcement officers observe the vehicle's operation and look for signs of impaired driving. Common indicators include erratic driving behavior, such as swerving, sudden stops or starts, and inappropriate speed.

This initial observation is critical because it sets the stage for the subsequent phases of detection. Officers gather evidence based on the behavior and actions of the driver and the vehicle. Identifying driving patterns associated with potential drunkenness or impairment is key to forming reasonable suspicion and warrants further contact with the driver, leading to personal contact and subsequent screening.

The success of OWI enforcement relies on this foundational step, as it directly informs officers about the need to interact with the driver. Without the observations made during the vehicle in motion phase, the other phases, such as personal contact and pre-arrest screening, would not have the necessary context to assess the situation effectively.