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Understanding Implied Consent to a Breath Test

When drivers in Iowa and elsewhere are stopped by police officers, they may or may not be aware of their rights during this stop. While it is clear that there are steps and procedures for police officers to take during the stop, some drivers may not understand what they have consented to when they applied for and obtained a driver's license. In matters when a driver is suspected of drunk driving, there is an implied consent to a breath test if an officer requests one.

When a driver is stopped based on the suspicion of driving under the influence of alcohol, a police officer will typically check for various signs of impairment before asking a driver to submit to a breathalyzer test. This test helps determine what the driver's blood alcohol concentration is and whether or not they are over the legal limit.

While a police officer is not required to administer a breath test during the field sobriety test, a driver is required to comply with the request if a police officer seeks to administer a breath test. The refusal of a breathalyzer test could result in penalties. Because motorists give implied consent to this testing when they obtain a driver's license, the refusal to submit to this test when an officer has reasonable suspicion that a driver is under the influence of alcohol could result in an automatic license suspension with the possibility of other penalties.

Even if drivers believe that police officers do not have enough evidence to prove that they were driving under the influence of alcohol, they could still face penalties for refusing a breath test. This is true even if the driver is not charged or convicted of an OWI.

Source: Findlaw.com, "Implied Consent Laws," accessed April 9, 2017

Categories
  • The Iowa State Bar Association
  • DUI Defense Law
  • NACDL
  • AAJ
  • Iowa Association of Justice

Keegan, Tindal, & Mason 

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  • J. Dean Keegan
  • Eric D. Tindal
  • Andrea D. Mason
  • J. Dean Keegan J. Dean Keegan

    Owner

    Decades of Award-Winning Legal Service J. Dean Keegan was born and raised in Waterloo, Iowa. After high school, Dean served ...
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  • Eric D. Tindal Eric D. Tindal

    Attorney

    Highly Rated Criminal Defense in Iowa City Eric D. Tindal, attorney at Keegan, Tindal & Mason, graduated from the University ...
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  • Andrea D. Mason Andrea D. Mason

    Attorney

    Experienced Criminal Defense in Iowa City Andrea D. Mason practices in the areas of white collar criminal defense, government ...
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  • I am glad he was there to get my head out of the guillotine when I needed him and keep my record clean.

    “I was stopped for an OWI. Dean took things as far as he could with the appeals process, finding every way possible to keep me driving in the meantime (which I needed to do for my job). Dean argued the ...”

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  • Operating While Intoxicated Record Expunged

    Johnson OWCR106890. Attorney Dean Keegan's client received an Operating While Intoxicated, a serious misdemeanor. After reviewing the videos, Mr. Keegan filed a Motion to Suppress arguing the officer denied his client's right to make a phone call. The State declined to present testimony at the hearing and the Motion to Suppress was granted, making the client eligible for a deferred judgment. Mr. Keegan's client will have her record expunged and be able to obtain a license after 90 days instead of 180.

  • Drug Charge Charge Dismissed

    Johnson County No. OWCR039210, Iowa City, Iowa. Attorney J. Dean Keegan conducted a three-day long suppression hearing which presented the first challenge to the "Drug Recognition Protocols" used in Iowa.

  • Embezzlement No Criminal Charges Filed

    Cedar Rapids, Linn County, Iowa. An employee of a Cedar Rapids business accused of embezzling six million dollars was not charged criminally after the County Attorney agreed to abide by an agreement negotiated by Attorneys J. Dean Keegan and Jerald Kinnamon in which the accused would pay two million dollars to the company.

  • Vehicular Homicide Charge Dismissed

    Johnson County No. FECR058630- Iowa City, Iowa. Attorneys J. Dean Keegan and Jerald W. Kinnamon successfully challenged the withdrawal of blood from a Defendant without his permission after a rollover accident in which a passenger in the vehicle was killed.

  • Vehicular Homicide Charge Dismissed

    Muscatine County No. FECR03718 - Muscatine, Iowa. If convicted of the vehicular homicide while intoxicated, as alleged in this case, the Defendant would have faced the possibility of a 25-year prison sentence, 17 years of which would have to be served before he would be eligible for parole. Following the depositions of the investigating officer and consultation with an accident reconstruction expert, Attorneys J. Dean Keegan and Jerry Kinnamon negotiated the dismissal of Vehicular Homicide as part of a plea

  • OWI Charge Dismissed

    Johnson County No. OWCR083001 - Iowa City, Iowa. Attorney J. Dean Keegan alleged that the Defendant's rights to contact a lawyer or family member may have been violated after his arrest. He requested video of the breath test from the arresting officer to support his allegation. When the officer failed to produce the video evidence in response written requests, a subpoena, and a Motion to Compel, the State conceded the issue and dismissed the offense.

  • OWI Acquittal at Jury Trial

    Johnson County No. OWCR077717- Iowa City, Iowa. Acquittal at jury trial of a defendant accused of Operating While Intoxicated who refused a breath alcohol test. Tried by Attorney J, Dean Keegan.

  • OWI Case Overturned

    State v. Hornik, Segura, et. al.Iowa City, Johnson County, Iowa. When the state of Iowa established that the Datamaster breath testing machine could be used to test subjects being investigated for OWI, it failed to establish a protocol for its proper use. Attorney J. Dean Keegan, in conjunction with the Johnson County Public Defender's Office, mounted a challenge to the use of the machine based on the lack of uniform instructions for its operation.

  • Zero Tolerance Driver's License Revocation Zero Tolerance Driver's License Revocation Overt

    Iowa Dept. of Inspection and Appeals Docket No. 08DOTOW3937. Attorney J. Dean Keegan successfully challenged a "Zero Tolerance" license revocation on the basis that the officer had failed to allow the driver to contact a family member or attorney for legal advice before submitting to the test.

  • OWI 2nd Offense Charge Dismissed

    Muscatine County No. OWCR040280 - Muscatine, Iowa. After Attorney Dean Keegan scheduled the deposition of the State's expert witness in this case, he learned that the breath test was inappropriately administered by the arresting officer. The State dismissed the offense outright and agreed that the breath test result should be inadmissible so the Defendant would not face the proposed one-year administrative revocation of her driver's license.

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