In my previous post, I discussed the benefits of refusing to submit to field sobriety testing if a driver has been stopped for suspicion of DWI/DUI. Unfortunately for them, many drivers still submit to the tests. Of the three standardized field sobriety tests, the One Leg Stand (OLS)…the last test that is administered in the battery…is the most unreliable. How do we know this? Because it is right there in black and white in the training materials from the National Highway Traffic Safety Administration (NHTSA).
NHTSA informs its trainees that based upon laboratory research, when the OLS is administered in a standardized manner, it was 65% accurate in detecting blood alcohol levels above .10. Think about that for a minute. If you were told that the plane you were about to board had highly reliable landing gear that worked 65% of the time, would you board the plane? A test that is 65% accurate in detecting blood alcohol levels above .10 is chock full of reasonable doubt. It should come as no surprise that officers have a number of tricks up their sleeves when asked to perform the test in court.