The One Leg Stand is a divided attention test that requires you to stand with one leg six inches above the ground for 30 seconds. The One-Leg Test is difficult to perform and thus inaccurate for those who are overweight, people who are over the age of 65 and people who have any kind of physical limitation.
An Orange County police officer administering the One-Leg Test will ask you to stand with your feet together and your arms at your side. The officer is required to demonstrate this task. The officer then tells you to maintain that position until told otherwise. Next the officer informs you that when he indicates to begin, raise one leg, either one, approximately 6 inches off the ground, foot pointed out, both legs straight and look at the elevated foot. You will be told to count out loud: 1001, 1002, 1003 and so on until told to stop. The officer will then ask you if you understand the instructions and then will instruct you to begin the test.
As with the other Standardized Field Sobriety Tests, an officer is looking for clues or indicators of impairment. The four clues associated with the One-Leg Stand are whether you sway while balancing, whether you use arms to balance, whether you hop and whether you put your foot down.
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