What is the first phase called in the three phases of DUI contact?

The first phase of DUI contact is known as the "Vehicle in motion" phase. This phase encompasses the observations and behaviors of the driver while the vehicle is being operated. Law enforcement officers are trained to detect signs of impairment such as erratic driving, poor vehicle control, speed violations, or unusual driving patterns during this phase. It plays a critical role in the overall DUI investigation, as these initial observations help establish a probable cause for stopping the vehicle and further assessing the driver's sobriety.

In contrast, the other phases serve different purposes in the DUI contact process. The "Pre-arrest screening" typically refers to the actions taken after the vehicle has been stopped when the officer assesses the driver’s signs of impairment through field sobriety tests. The "Decision-making phase" involves the officer deciding whether to arrest the driver based on the information gathered from both the vehicle in motion phase and the personal contact phase, where further assessments and interactions occur. Understanding the distinct functions of these phases is essential for comprehending the overall DUI investigation process.