During Phase Two, what must the officer determine?

During Phase Two of the Horizontal Gaze Nystagmus (HGN) test, the officer focuses on the driver's behavior and the need for further assessment. A critical aspect of this phase involves determining whether the driver should exit the vehicle. This decision is based on the officer's observation of the driver's condition and their responses during the initial interaction. If the officer suspects that the driver may be impaired, it is essential to have them exit the vehicle safely to perform the HGN test and evaluate their level of impairment further. This step is crucial for ensuring the safety of both the driver and the officer while allowing for the proper assessment of the driver's ability to operate a vehicle.