The standardized field sobriety tests consist of a three-test battery which includes a check of your eyes (called the horizontal gaze nystagmus test, or HGN), and two tests of your coordination, balance, stamina and memory called the one-leg stand test and the walk and turn test. Officers use these tests to establish probable cause for a drunk driving arrest. The tests are set forth in the National Highway Transportation Safety Administration manual, which is used to train law enforcement in administering the tests. The DUI defense team of Charles M. Rowland II not only has the most up-to-date NHTSA manual, but every copy (and every validation study supporting the manual) since the inception of governmental scientific study of intoxication in 1977. In addition, Charles M. Rowland has attended the same training as is given to law enforcement to administer and evaluate the standardized field sobriety tests. He has gone far beyond the tests, to earn certification in Forensic Sobriety Assessment. In addition to the knowledge, Charles Rowland has applied these principles in hundreds of DUI motions and in DUI/OVI trials throughout Ohio. This knowledge and experience is particularly useful in cases where the defendant refuses to take a chemical test and the entire case depends on evaluating the standardized field sobriety tests. Hire a lawyer who has the training and experience to win your case.