 Hello, sir. How are you tonight? We are setting up a DUI checkpoint. Have you had any alcohol to drink at all? We have officers out here looking to identify an apprehend drivers under the influence of alcohol or drugs. You'll come in contact with one of the officers. The officers will conduct a quick investigation. Do you mind if I check your eyes real fast just to make sure? No, sure. Go ahead. Are they observing any signs of impairment, smelling alcohol, the odor of burnt marijuana? You just had the one one joint, right? If they reasonably suspect that there's something for them to investigate further, they'll ask the driver to step out. They'll run them through roadside maneuvers, which is standard field sobriety testing. If the subject doesn't perform those as a reasonably sober person would, the officer would have them choose between taking a blood test or a breath test. I just need to make sure that you haven't been drinking this evening. If you're going to consume alcoholic beverages, you get behind the wheel of a car, or you're going to smoke marijuana or take prescription drugs, you could potentially be arrested.