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

Field sobriety tests are typically conducted during the pre-arrest screening phase. This phase occurs after an officer has observed signs of potential impairment and believes a driver may be under the influence of alcohol or drugs. It allows the officer to gather additional evidence to support further action, such as performing a breathalyzer test or making an arrest.

During pre-arrest screening, the officer will administer standardized field sobriety tests, which are designed to assess a driver's physical and mental coordination. These tests help the officer determine whether there is enough probable cause to proceed with an arrest for driving under the influence.

Other phases mentioned, such as vehicle in motion and initial observation, primarily involve the officer's observations while a vehicle is moving or immediately after it has been stopped. These phases focus on assessing driving behavior and signs of impairment but do not involve formal testing of sobriety. Vehicle inspection is concerned with the mechanical state of the vehicle and would not involve any assessment of the driver's impairment. Thus, the pre-arrest screening is the appropriate phase for conducting field sobriety tests.