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Inaccuracy rates of field sobriety tests

If you are ever stopped by a police officer while driving in Massachusetts and that officer suspects you may have been driving while under the influence of alcohol, you may be asked to take part in some tests. This request may well leave you feeling nervous and afraid as certainly you do not want to be arrested for drunk driving. While keeping calm may be difficult at this time, one thing you should know is that the field tests used by law enforcement are not fully accurate.

As explained by FieldSobrietyTests.org, the National Highway Traffic Safety Administration has approved the use of three specific tests following very standardized procedures. Not even one of the tests is 100-percent accurate which each test having a different accurate rating. Several factors may play into the accuracy of any of these tests.

The most accurate test is one that measures an involuntary jerking of the eye and that test is still only 77-percent accurate. The walk-and-turn test has an accuracy rating of 68 percent while the one-leg stand test is said to have an accuracy measure of only 65 percent. The cumulative accuracy reportedly increases when all three tests are administered. This combined accuracy is stated at 82 percent, still leaving a reasonable level of doubt as to whether or not a driver is truly impaired or not.

If you would like to learn more about how you might appropriately defend yourself against criminal charges for drunk driving, please feel free to visit the field sobriety test inaccuracy rates page of our Massachusetts drunk driving website.

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