Everything You Should Know About MD DUI Checkpoints 

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What Are DUI Checkpoints?

DUI (Driving Under the Influence) checkpoints are roadblocks set up by law enforcement officers, such as police officers or the Maryland state police, to detect and deter drunk driving. During these checkpoints, officers will typically check drivers for signs of alcohol impairment and check for a valid driver’s license and registration.

If a driver is found to be under the influence, they may be arrested and charged with a DUI. A Maryland DUI attorney can guide you on the Maryland DUI laws and DUI checkpoints.

DUI Checkpoint Law

Federal law permits DUI checkpoints if they serve a roadway safety purpose and are not discriminatory. However, checkpoints are prohibited in certain states. To pass legal review, most courts demand that the setup and implementation of a DUI checkpoint be justifiable.

DUI checkpoint laws are established by state and federal laws and court precedents set by the Supreme Court. These laws dictate how law enforcement, such as police officers, can set up and operate drunk driving checkpoints to determine the blood alcohol content (BAC) of motorists.

  • Before setting up a DUI checkpoint, law enforcement must consider various factors, such as the traffic flow and placement of roadway signs to warn motorists. 

  • The checkpoint should be conducted in a way that minimizes any disruptions to traffic flow, such as stopping every third car or using a pattern unrelated to the number of cars.

  • During a DUI checkpoint, police officers may use various methods, including chemical tests such as breathalyzers and urine tests, to determine if a driver is under the influence. 

  • Drivers have the right to refuse chemical tests, but they may face consequences such as license suspension and other penalties.

During a DUI checkpoint, police officers have the right to question motorists. However, just because a checkpoint is set up does not automatically give police officers the right to stop drivers without probable cause. Before they can request a chemical test, they must have a reasonable suspicion that the driver is under the influence.

It’s important to note that motorists have constitutional rights, and any evidence obtained during an illegal checkpoint may not be admissible in court.


Are DUI Checkpoints Illegal in Maryland?

In Maryland, DUI checkpoints are legal despite being banned in some states. However, a police officer must comply with strict regulations while conducting them.

How Do DUI Checkpoints Work?

During a checkpoint, officers may stop vehicles at random intervals or based on a predetermined pattern. The goal of the checkpoint is to determine if a driver is under the influence of alcohol or drugs.

During the checkpoint, the following steps may occur:

  • Signs and warnings: Ahead of the checkpoint, there must be signs warning drivers of the upcoming roadblock.

  • Traffic stop: Law enforcement officers must randomly stop drivers and ask for their license and registration.

  • Observations: Officers must look for signs of intoxication, such as slurred speech or the smell of alcohol on the driver’s breath.

  • Field sobriety tests: Drivers may be asked to perform field sobriety tests, such as walking straight or following a moving object with their eyes.

  • Chemical tests: If the officer suspects a driver is under the influence, they may ask the driver to submit to a chemical test, such as a breathalyzer or blood or urine test. Some states, including Maryland, have an implied consent law meaning that drivers are legally required to submit to a chemical test when there is a reason to believe that the driver is intoxicated.

  • Arrest: If the chemical test results indicate a driver’s blood alcohol content exceeds the legal limit, they will be arrested for a DUI.

You can check out our guide on “How Much Does a DUI Cost in MD” to know more about the penalties and fines associated with DUI.

Can You Avoid a DUI Checkpoint in Maryland?

Maryland law allows drivers to purposefully avoid DUI checkpoints. Drivers who choose to avoid a checkpoint must do so safely and legally, such as by taking a different route or making a legal U-turn. A sudden or illegal maneuver to avoid a checkpoint can incur additional charges.

It is important to note that the laws and procedures surrounding DUI checkpoints can be complex and can vary depending on the specific circumstances. 


Charged With a DUI? Get in Touch With Our Dedicated DUI Attorneys 

If you or someone you know has been charged with a DUI, it is important to seek the help of a qualified and experienced Maryland DUI lawyer. The consequences of a DUI conviction can be severe and long-lasting, affecting your driving privileges, criminal record, and ability to find employment or housing in the future.

At Scrofano Law PC, our dedicated DUI attorneys have the knowledge and experience to provide the strong legal representation you need to protect your rights and defend your interests. They can even help you understand the difference between DWI and DUI. With a proven track record of success, Scrofano Law PC is an excellent choice for anyone facing a DUI charge in Maryland.

Don’t wait any longer. Call us today for a free consultation. Our team can answer your questions and guide you through the legal process. Let us help you fight for your future and protect your rights!

Frequently Asked Questions 

What Time Do Checkpoints Start in Maryland?

The exact start time of a DUI checkpoint in Maryland can vary depending on the specific checkpoint and location. However, before a checkpoint is set up, law enforcement, such as police officers, must follow strict requirements to ensure that it is conducted legally and that drivers’ constitutional rights are protected.

How Long Do Checkpoints Last in Maryland?

The length of a DUI checkpoint in Maryland can vary depending on several factors, such as the number of officers present, the volume of traffic, and the number of drivers under the influence. Typically, these checkpoints are set up for a few hours but can last longer if necessary.

During a checkpoint, police and other law enforcement officers may stop vehicles at random intervals or based on a predetermined pattern.

Does WAZE Point Out DUI Checkpoints?

The app relies on crowdsourced information from users to warn others of the location of sobriety checkpoints by leaving comments.

However, the accuracy of this information cannot be guaranteed, and law enforcement agencies may change the location or timing of checkpoints. Moreover, the legality of leaving comments regarding the location of DUI checkpoints and obstructing law enforcement is questionable.

Follow the rules of the road and drive responsibly, regardless of the information displayed on a navigation app.


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