This document contains desciptive instructions for field sobriety tests and indicators that my be observed under drug and alcohol impariment. These documents are designed to be quick reference guides for officers and prosecutors. The field sobriety tests covered are the Horizontal Gaze Nystagmus Test, Walk and Turn Test, One Leg Stand Test, Modified Romberg Balance Test, Finger to Nose Test, Lack of Convergence Test and pupil size. Each field sobriety test includes a 5-10 minute video overview of each test. The overviews include proper administration of the test, officer considerations, drug impairment and more.