How long is the subject required to maintain their raised leg during the One-Leg Stand test?

During the One-Leg Stand test, the subject is required to maintain their raised leg for 30 seconds. This duration is crucial as it allows officers to observe the subject’s balance and coordination, which are indicators that may suggest impairment. Maintaining the raised leg for this specific length of time helps in ensuring that the test is standardized and provides enough time for an accurate assessment of the subject's physical abilities under the influence of substances. The 30-second timeframe is essential for officers to gather sufficient data on the individual's performance, creating a reliable basis for evaluating potential intoxication.