Are field tests for drunk driving accurate?

If you are like most people in Pennsylvania who have been arrested for and charged with drunk driving, you will want to understand how you might defend yourself in this situation. It may well seem that you have few rights but the reality is that you always have the right to a defense when facing criminal charges as this is a fundamental tenet of the criminal justice system. 

During your traffic stop, you may well have been asked to perform tasks before you were actually placed under arrest. One thing you should know is that these tests called field sobriety tests are not used or even able to measure your sobriety or potential lack thereof. As explained by, they are designed to give a police officer enough evidence to legally place you under arrest.

Also essential for you to know is that these tests are anything but foolproof. The accuracy rate of the three standardized tests runs from 65 percent to 77 percent. Factors such as your weight, the presence of any joint, bone or soft tissue injury and more may all play into your inability to pass these tests even if you are completely sober. Neurological conditions may even interfere with results for the eye test that tracks your eyeball movements.

This information is not intended to provide legal advice but is instead meant to let residents in Pennsylvania have an idea of how tests used in a drunk driving arrest may not be accurate and how they may defend themselves against these charges.