Field sobriety test inaccuracy rates

| Dec 8, 2018 | Drunk Driving |

If you have been arrested for and charged with suspected driving under the influence of intoxicants in Oregon, you are far from alone. Despite the many stereotypes that abound, the fact remains that many highly responsible and respected people find themselves in this situation. It is important for you to learn about the elements involved in your arrest and how you may defend yourself.

One important thing that many people might not be aware of is that the field sobriety tests used by law enforcement officers are not completely accurate. Also, they do not in any way prove that a driver is intoxicated. According to, these roadside tests are used to provide just enough evidence to show that a person might be intoxicated, thereby legally allowing an officer to place that person under arrest. 

The lack of objectivity of these tests is only one thing you should know about. Each of the three tests approved by the National Highway Traffic Safety Administration has a known inaccuracy rate. The most accurate test is the one that measures a jerking motion of the eyeball and that is said to be 77-percent accurate. The walk-and-turn test and the one leg stand test have accuracy rates of 68 percent and 65 percent, respectively. When all three tests are used, the joint accuracy rate is still only 82 percent. 

If you would like to learn more about how to protect your rights after being arrested for suspected driving under the influence, please feel free to visit the drunk driving charges page of our Oregon DUII and criminal defense website.