DUI Checkpoints in South Carolina: What You Need to Know

In South Carolina, DUI (Driving Under the Influence) checkpoints are a common tool used by law enforcement to deter drunk driving and maintain road safety. However, for many drivers, encountering a DUI checkpoint can be a daunting experience. Understanding your rights and the legalities of these checkpoints can help you navigate these situations more confidently.

What are DUI Checkpoints?

DUI checkpoints, also known as sobriety checkpoints, are roadblocks set up by law enforcement agencies to check drivers for signs of intoxication or impairment. These checkpoints are typically announced in advance and are set up at specific locations for a short duration. The primary goal is to deter drunk driving and catch those who are driving under the influence.

Are DUI Checkpoints Legal in South Carolina?

Yes, DUI checkpoints are legal in South Carolina. The U.S. Supreme Court has ruled that properly conducted DUI checkpoints do not constitute unreasonable searches and seizures, and thus are permissible under the Fourth Amendment. However, there are specific guidelines that law enforcement must follow when conducting these checkpoints to ensure they are legal and constitutional.

What Happens at a DUI Checkpoint?

At a DUI checkpoint, law enforcement officers may stop vehicles either randomly or using a predetermined formula (such as every third or fifth vehicle) to ask drivers a few questions and look for signs of impairment. If an officer suspects that a driver is under the influence, they may conduct a field sobriety test or a breathalyzer test.

Your Rights at a DUI Checkpoint

  1. The Right to Remain Silent: You are not obliged to answer incriminating questions. Politely stating that you wish to remain silent is within your rights.
  2. Refusal to Take Sobriety Tests: In South Carolina, you have the right to refuse field sobriety tests and portable breath tests. However, be aware that refusal can have legal consequences, including an automatic suspension of your driver’s license.
  3. Request for an Attorney: If you are detained or feel that your rights are being violated, you can ask for an attorney. Remember to contact John Mobley Law Firm if you feel that your rights have been violated at a DUI checkpoint.

Tips for Handling DUI Checkpoints

  1. Stay Calm and Be Polite: Cooperation can go a long way. Be respectful and calm when interacting with law enforcement officers.
  2. Know What to Provide: You are required to show your driver’s license, registration, and proof of insurance. Know where these documents are and present them when asked.
  3. Avoid Self-Incrimination: Politely decline to answer potentially incriminating questions.
  4. Understand the Consequences of Refusal: Refusing a breathalyzer test at the station can lead to automatic license suspension and other penalties under South Carolina’s implied consent laws.


While DUI checkpoints are meant to keep the roads safe, they can be intimidating. Knowing your rights and how to handle these checkpoints can help ensure that your encounter with law enforcement is as smooth as possible. Remember, the best way to avoid any trouble at a DUI checkpoint is to not drink and drive. If you find yourself facing charges stemming from a DUI checkpoint, consulting with an experienced DUI defense attorney is a wise step to understand your options and rights.