Per Se Violation

There are two theories under which any DUI case can be proven by the state: Per Se Theory and Non Per Se Theory.

"Per Se" Violation

"Per Se" is just Latin for "in and of itself" (I know, the use of Latin does not make the law "user friendly" when no one speaks Latin any more). A Per Se DUI is the operating of a motor vehicle with a Blood Alcohol Content (BAC) of .08 or higher. This is the BAC set by the legislature to equal intoxication. Thus, a driver with a BAC of .08 or higher is "in and of itself" driving under the influence, whether they appear intoxicated or not.

This does not make your case hopeless, an experience DUI attorney will know many ways to defend against a "Per Se" DUI violation.

Non-"Per Se" Violation

This is also called a "DUI Less Safe" charge. It slightly differs from the DUI Per Se charge in that an arrest is made based on the opinion of the officer rather than a BAC. If the officer determines that a driver is intoxicated based on their behavior and/or driving pattern, the driver is charged with a DUI can be charged with DUI whether or not their BAC is above the .08 legal limit.

In Non Per Se DUI cases the case centers around the behavior of the driver and the officer's judgment/opinion, not the BAC. In fact, under this theory a conviction does not require that the driver ever even take a BAC test.

While your chances of fighting the two charges may be different, they carry the same penalties if convicted.

See: Idaho Code §18-8004: Persons Under The Influence Of Alcohol or Drugs.

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Each case is unique. The strength and weakness of your case will depend the particular facts of your case. Call me for a free consultation. I will answer any questions you have, and give you an honest assessment of your case.

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