One of the most common questions I get from the public is,”what do I do if i am stopped by the police and asked to do field sobriety test?”
Roadside “field sobriety tests” are commonly used by police officers in DUI investigations to determine whether a driver is under the influence of alcohol. Typically, they consist of a battery
of 3-4 tasks, such as walk-and-turn, one-leg-stand, finger-to-nose, or
nystagmus (”follow the pencil with your eyes”).
Based on 3o years od defending DUI suspects, my advice is to NEVER take the field tests. My compatriots agree. Los Angeles DUI lawyer Lawrence Taylor, author of the best-selling legal
treatise Drunk Driving Defense, argues that although these DUI tests have an
aura of scientific credibility to a jury, they have no real basis in science
and are almost useless in determining intoxication.
First, Taylor says, any honest officer will admit that the decision to arrest
for DUI is usually made at the driver’s window. Since the officer has already
made up his mind, his subjective decision as to whether a person passed or
failed the tests is suspect: as with any human, he will “see” what he expects
to see.
Second, the conditions under which field sobriety tests are taken almost
guarantee failure: usually late at night, possibly cold, along a graveled or
sloped roadside, cars passing a few feet away with bright headlights and
buffeting the suspect with wind waves, the officer’s moving flashlight and his
patrol car’s blinding headlights providing the lighting. Add the fact that
the DUI suspect is nervous, possibly frightened and completely unfamiliar with
the tests.
Dr. Spurgeon Cole of Clemson University conducted a study on the accuracy of
roadside field sobriety tests. His staff videotaped individuals performing six
common field sobriety tests, then showed the tapes to 14 experienced police
officers and asked them to decide whether the suspects had “had too much to
drink and drive”.
Unknown to the officers, the blood-alcohol concentration of each of the 21 DUI
subjects was .00% — stone sober.
The results: the officers gave their opinions that 46% of these innocent
people were “too drunk to drive” (Cole and Nowaczyk, “Field Sobriety Tests:
Are they Designed for Failure?”, 79 Perceptual and Motor Skills Journal 99).
In other words, the field sobriety tests
were hardly more accurate at detecting intoxication than flipping a coin.
So based on the above, would I ever take a field sobriety test? NEVER!!