A roadside DUl investigation becomes increasingly tense as a woman is asked to perform the well-known "9 step" walk-and-turn sobriety test.

 A roadside DUl investigation becomes increasingly tense as a woman is asked to perform the well-known

"9 step" walk-and-turn sobriety test. Officers carefully explain the instructions while observing balance, coordination, and the ability to follow directions during the traffic stop.