Illinois law provides for different situations in which a person arrested for Driving Under the Influence (DUI) may be required to obtain a Drug and Alcohol Evaluation Uniform Report. It all begins with some sort of encounter with law enforcement, possibly a traffic violation which, according to Terry v. Ohio 392 US 1, 20 L.Ed. 2d 889 (1968) is a permissible basis for a police officer to come into contact with a member of the public.
Or the driver may be involved in a collision that, even though not the driver’s fault, forms the basis of a police intrusion. Even a burned out turn signal, a DUI roadblock or a random running of a license plate can justify a stop.
Thereafter, the officer may detect signs of possible impairment. These may include an odor of alcohol, slurred speech, bloodshot, watery eyes, confusion about where you have been and where you are going, and difficulty producing your license, registration and insurance cards. Following that, the officer will probably ask you to exit your vehicle so that he can administer standardized field sobriety tests.
The three tests that are typically administered are the Horizontal Gaze Nystagmus (the HGN is the procedure in which the police move a pencil across your line of vision), the walk-and-turn (walking a straight line) and the one-legged stand, or OLS. Each test is scored for the number of clues (errors) from which the officer makes a subjective conclusion as to whether or not you passed.
The next test will be administered using a Portable Breath Test (PBT) device, as authorized by Illinois law (625 ILCS 5/11-501.5) to determine whether there exists probable cause to arrest for DUI. However the PBT results are not admissible in the DUI prosecution itself as a means of proving your alcohol blood alcohol content.
At this point, the police will decide whether or not to arrest you. If you are arrested, you will be asked to take a “chemical test”, either of your breath or blood. The breath test is administered with a type of machine that the Illinois State Police have allegedly certified for accuracy pursuant to 20 Illinois Administrative Code, Part 1286. The results of this test are admissible at trial to prove your blood alcohol contents. 625 ILCS 5/11-501.2


