DUI Checkpoints

DUI checkpoints are a way for police officers to enforce state DUI laws against drinking and driving. Most states allow DUI checkpoints with only a few states making the sobriety stations illegal under state DUI law.

During a DUI checkpoint, police officers stop every vehicle or a predetermined number of drivers to examine drivers for signs of impairment. These checkpoints help raise public awareness about the dangers of driving under the influence of alcohol or drugs and to charge people for committing a DUI offense. Typically, DUI checkpoints are scheduled when more people are likely to drink and drive, such as weekends or holidays.

Although DUI checkpoints help with DUI enforcement, these stations have caused controversy in many states because of the questionable constitutionality and DUI arrest rates.

DUI Checkpoint Controversy

Opponents of DUI checkpoints have cited the Fourth Amendment's protection against unreasonable search and seizure, or searches and seizures that occur without probable cause, to support the argument that DUI checkpoints are unconstitutional.

In 1990, the Supreme Court ruled that the infringement of Fourth Amendment rights caused by DUI checkpoints is overshadowed by the potential public benefit of getting dangerous, impaired drivers off the road. The court added that DUI checkpoints must follow certain guidelines to be legal:

  • Decisions must be made by supervisors, not arresting officers
  • Vehicles must be stopped only according to a predetermined formula
  • Public and officer safety are most important
  • Locations must be selected by policymakers, based on drunk driving statistics
  • Duration must be limited by concerns of effectiveness and intrusiveness
  • Clearly visible warning lights and signs must be displayed telling drivers
  • Drivers must be detained for the minimum amount of time possible
  • Advance publication of the place and time is required to increase its deterrent effect and minimize intrusiveness

Every state that allows DUI checkpoints must determine which regulations apply. The following states have ruled that, even with the above regulations, DUI checkpoints remain unconstitutional (Please note that laws may have changed since our last update):

DUI Checkpoint Effectiveness

Though Mothers Against Drunk Driving (MADD) promotes DUI checkpoints as an effective preventative measure to curb the occurrence of driving under the influence, various studies have shown that DUI checkpoints may be much less effective than other police methods.

According to a report in the Arizona Daily Star, the high cost of DUI checkpoints is unjustified by the low arrest rate. Consider these statistics, which were discovered by an investigation conducted by the Star.

  • Between 2005 and 2007, more than 46,000 drivers were stopped. Less than 1% of these were arrested, and fewer than half of those were convicted.
  • On July 4th, 2007, a DUI checkpoint arrested less than .1% of the more than 1,239 drivers who passed through the checkpoint.
  • Statistics show that DUI arrest and conviction rates have shown no decrease since 2005. It seems the educational benefits of DUI checkpoints are minimal, if there's any.
  • Conviction rates for DUI checkpoint arrests tend to be lower than regular DUI arrests because DUI lawyers often challenge the constitutionality of DUI checkpoint arrests.

If you were arrested at a DUI checkpoint, consult with a DUI attorney in your area to determine whether or not your DUI arrest was constitutional. To get in touch with a local DUI attoreny as soon as possible, fill out a free DUI attorney connection form or call 877-349-1311.



PAID ATTORNEY ADVERTISEMENT. This Web site is a group advertisement. It is not a lawyer referral service or prepaid legal services plan. Total DUI is not a law firm. The sole basis for the inclusion of the participating lawyers or law firms is the payment of a fee for exclusive geographical advertising rights. Total DUI does not endorse or recommend any lawyer or law firm who participates in the network. It does not make any representation and has not made any judgment as to the qualifications, expertise or credentials of any participating lawyer. The information contained herein is not legal advice. Any information you submit to Total DUI may not be protected by attorney-client privilege. All photos are of models and do not depict clients. All case evaluations are performed by participating attorneys. An attorney responsible for the content of this Site is Kevin W. Chern, Esq., licensed in Illinois with offices at 25 East Washington, Suite 510, Chicago, Illinois 60602. To see the attorney in your area who is responsible for this advertisement, please click here.

If you live in Alabama, Florida, Missouri, New York or Wyoming, please click here for additional information.