What are the Walk and Turn and the One Leg Stand tests?
The Walk and Turn and One Leg Stand Tests are balance and coordination tests that also determine an individual’s ability to follow instructions (accompanied with demonstrations). However, the instructions are long and may be confusing, and the officer may have trouble giving proper instructions. The Walk and Turn has a 68 percent probability of predicting that an individual has a BAC of .08 or higher and the One Leg Stand is accurate about 65 percent of the time.