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DUI/DWI offenses

Testing DUI/DWI

A driver can be pulled over by a police officer for suspected driving under the influence if he has been observed driving erratically, excessively slowly, speeding, or not paying heed to road signs and signals. Therefore, providing your driver’s license and registration documents to the officer is necessary.



However, in absence of a lawyer you are not required to answer any questions posed by the officer.

Different Tests

To determine that you were driving under the influence, the police officer can perform tests on you. In addition, field sobriety tests are done to assess your coordination and instruction following ability.

They are simple, like standing on one leg, walking in a straight line, Rhomberg Balance test, etc. Of course, you can refuse to take these tests, but doing this can provide evidence of drunk driving to the prosecution.

Breath Testing

Breath testing is another way of determining that you were driving under the influence. You can refuse to take a breath test, but this will incur penalties on you since accepting driving privileges automatically implies that you’ve given your consent for them.  A refusal for testing can also invite charges separate from DUI, leading to suspension of your driver’s license for a year.

Two types of breathalyzer tests are carried out; Preliminary Breath Tests (PBTs) and Evidential Test Devices (ETDs). PBT is used to determine probable cause, not for proving intoxication. Therefore, submitting for a PBT by a driver is unnecessary, and the officer must inform you of this. You have to submit for an ETD within three hours of getting arrested; else, you can be charged with refusal to submit for a breath or blood test.

Blood testing is done if the driver is suspected to be under drug influence.

Testing methods have some drawbacks. However, an experienced DUI attorney with good knowledge of these tests can defend you. Hence, if you are charged with DUI/DWI charges, it is recommended to consult an expert attorney from the same area of law.

Important: The articles available on are neither legal advice nor a replacement for an attorney. The contents are general information and guidance concerning different legal issues. We make sure that these articles prove helpful to you, but we do not promise or guarantee that they are suitable for your condition. We also do not take responsibility for any loss that might cause to you using these articles. Hence, we strictly suggest you get expert legal advice. Consult or hire an attorney in case of any doubt.