Why is documentation considered important during the HGN test?

Documentation during the HGN test is vital because it establishes a detailed record of the testing process and the officer’s observations. This record is essential for legal purposes, as it can be presented in court to support the evidence of impairment. Accurate documentation helps to ensure that the procedure is properly followed, which is crucial for the admissibility of the test results in legal proceedings. Additionally, thorough documentation can outline the conditions under which the test was administered, the behavior observed, and any results gathered, providing a comprehensive picture that supports the officer's conclusions regarding a suspect's sobriety. This legal safeguard enhances the reliability and credibility of the HGN test as part of the overall evaluation of driving under the influence.