The Fourth of July is one of the busiest travel holidays of the year in South Carolina, and it is also one of the most heavily enforced periods for DUI investigations. Drivers should expect increased enforcement from the South Carolina Department of Public Safety (SCDPS), the South Carolina Highway Patrol (SCHP), local police departments and county sheriff’s offices. These agencies often participate in national and statewide campaigns such as “Booze It & Lose It” and “Sober or Slammer,” which focus on impaired driving enforcement during the holiday itself as well as the surrounding weekends and late-night celebrations.
One of the most common enforcement tools is the saturation patrol. Unlike a checkpoint, a saturation patrol does not involve a fixed location. Instead, law enforcement agencies deploy a large number of officers to targeted areas where impaired driving is believed to be more likely. These patrols often focus on entertainment districts, roads leading away from fireworks displays, concert venues, bars, lakes and beach communities. Officers actively watch for traffic violations, equipment issues or driving behaviors that may indicate impairment. Once a lawful stop is made, officers may investigate further if they observe signs of alcohol or drug use.
Drivers may also encounter sobriety checkpoints during the holiday period. To be lawful, these operations generally must follow established procedures. Supervisors typically approve the checkpoint in advance and implement a written operational plan. Officers use a neutral stopping pattern, such as stopping every vehicle or every predetermined number of vehicles, rather than selecting drivers arbitrarily. Checkpoints are usually highly visible, with marked patrol cars, traffic cones, lighting, signage and designated pull-off areas. They are designed to create minimal delays and typically operate for a limited period with clear start and end times. While law enforcement agencies often publicize holiday DUI enforcement campaigns in advance, they generally do not announce the exact locations or times of checkpoints.
Holiday travelers are most likely to encounter enforcement operations between approximately 9 p.m. and 3 a.m., particularly after fireworks shows and large public events conclude. Common travel corridors include Interstate 26, Interstate 20, Interstate 77, Interstate 85, U.S. Highway 17, U.S. Highway 501 and U.S. Highway 278. Roads leading to and from beaches, lakes, entertainment districts and rural cut-through routes frequently receive additional attention.
What to know if you’re arrested despite your best efforts
If you are cited or arrested for DUI during the holiday period, it is important to act quickly. South Carolina deadlines can be short, including the 30-day period for requesting an administrative hearing to challenge an implied-consent suspension and explore potential temporary driving privileges. You’ll want to consult a skilled legal team immediately to start building a strong defense strategy on your behalf as a result.

