What does the ashore FST battery consist of?

The ashore Field Sobriety Test (FST) battery consists of three standardized tests: horizontal gaze nystagmus, walk and turn, and one leg stand. These tests are designed to assess an individual's level of impairment, particularly in situations where law enforcement is determining if a driver is operating under the influence of alcohol or drugs.

Horizontal gaze nystagmus involves the officer observing the subject's eyes as they follow a moving object, which checks for involuntary jerking that can indicate impairment. The walk and turn test assesses balance and the ability to follow instructions by requiring the individual to walk heel-to-toe in a straight line and then turn and repeat the process. The one leg stand evaluates balance and coordination by having the subject stand on one leg while counting out loud.

This trio of assessments has been validated through a rigorous process and is recognized for effectively indicating impairment, making it the correct choice in this context regarding the ashore FST battery.