During which phase would an officer likely conduct field sobriety tests?

The phase where an officer is likely to conduct field sobriety tests is pre-arrest screening. This phase typically occurs after the officer has observed behavior that leads them to suspect that a driver may be impaired, such as erratic driving, lack of vehicle control, or signs of intoxication. During pre-arrest screening, the officer gathers evidence to determine whether there is probable cause to make an arrest for driving under the influence.

Field sobriety tests are standardized assessments designed to evaluate a driver's motor skills and cognitive abilities, which can indicate impairment. Completing these tests provides the officer with observable evidence that supports their suspicion of intoxication. This step is crucial before making the decision to arrest someone for driving under the influence. Thus, it is directly related to the process of evaluating potential impairment before taking formal action.

In contrast, the vehicle in motion phase refers to the initial observation of the driver while operating the vehicle, which may alert the officer to possible impairment but does not involve formal testing. Initial observation encompasses the officer's first impressions and behaviors observed before any interaction occurs, while vehicle inspection involves checking for problems with the vehicle itself.