Columbus Police and other Ohio law enforcement agencies use a battery of tests to determine if a person is OVI. All of these tests are designed to gather evidence to be used against you if you are ultimately charged with DUI. Currently The National Highway Traffic Safety Administration (NHTSA) only recognizes the scientific reliability of THREE of these tests in determining whether a person is drunk driving, DUI, or OVI. These three tests are more commonly known as Standardized Field Sobriety Tests. The first standardized field sobriety test that an officer should administer is called the Horizontal Gaze Nystagmus (HGN) test aka the "the eye test."

 
 

Columbus DUI Detection Phase Three: Exiting the Vehicle

If the officer investigating you for DUI asks you to step out of your vehicle you should be on high alert. From this point forward all of your actions will be heavily scrutinized by the officer. So take a deep breath and get it right. This stage of Columbus OVI investigation is called the "exit sequence." NHTSA instructs an officer to look for the following indications of impairment:

 
 

Columbus DUI Detection Phase Two: Personal Contact cont'd

At this point in the DUI investigation the police officer has probably already determined that you will be asked to exit the vehicle and submit to Standardized Field Sobriety Tests, but why not make you look a little more foolish first. Now that the officer has used several techniques to determine whether you are OVI, he or she may use one or two more questions to catch you off guard and gather as much evidence to be used against you as possible. These questions seem simple on the surface, but when someone is impaired by alcohol or drugs answering them becomes much more difficult. In fact, these elementary level questions often make my clients look the worst. 

 
 

Columbus OVI Detection Phase Two: Personal Contact - Police Questioning Techniques

Most of the information in my two previous articles was fairly logical and straightforward. Today I'm going to give you the information the police do NOT want you to have. Columbus Police and other law enforcement agencies use specific questioning techniques during their "pre-arrest" DUI investigation. Once again, these techniques are taken directly from the National Highway Traffic Safety Administration (NHTSA) manual. NHTSA developed testing procedures to detect drunk driving after years of studying the effects of alcohol on your mental and physical capabilities. Obviously the effects of alcohol on the nervous system vary from person to person, but NHTSA found one extremely valuable common occurrence amongst their drunken test subjects. 

 
 

Columbus DUI Detection Phase Two: Personal Contact

Now you're pulled over and feeling panicked, agitated or possibly angry. Panic = you saw those red and blue lights suddenly lit up like the 4th of July, your heart skipped a beat or two (you may have thought a heart attack was imminent), and you started giving yourself a pep talk. Note: If you've started a pep talk, you need a Columbus DUI Attorney immediately.  Agitation and anger usually come from feelings like, "I didn't do anything wrong? Why would he/she possibly pull me over?" Now what? Well now the officer is going to use his knowledge, training and experience to detect whether or not you, as the driver of a motor vehicle, are under the influence of alcohol or drugs. This is where things start to get tricky. 
As stated in my previous post, all techniques and clues that Columbus police officers use in DUI detection are taken directly from the National Highway Traffic Safety Administration (NHTSA) manual on drunk driving. The first step in the Personal Contact phase of Columbus DUI investigation is called "pre-exit screening."