This traffic stop is about to turn into a full DUI investigation. The officer starts with the eye test then moves into the standardized field tests. And pay attention, these tests aren't just random movements. The officer is watching for specific clues that may indicate impairment. But the big question is, will the driver give the officer enough evidence to make an arrest? >> Same thing don't move your Same thing don't move your head just move your eyes. >> Okay. >> All right, next test I'm going to do is the walk and turn. Are your legs okay? >> Yes. >> Okay. So, you're going to stand in this position. Uh Just like that. You can keep your arms on your side. You're going to put your uh left foot in front of your right foot. It's going to look like this. Put your left foot Don't move your head, all right? You're going to put your left foot first and then you're going to put your right foot in front of your left foot. Okay? Start with that. Left foot. All right. Stay in that Stay in that position when I tell you to stop. Stay in the position, all right? So, you're going to you're going to hit heel to toe. It's going to say heel to toe, all right? You're going to put your left foot in front, right foot in front of your left foot. Do you understand? >> Yes. >> All right. Go. Stay right there. You're going to put your left foot in front. Put your left foot in front. You're going to put your right foot in front of your left foot. Stay in that position until I tell you to begin. It's going to be heel to toe. You got to touch heel to toe. All right. Oh, hold on. Don't start yet. Okay. Get in that position when I tell you. Get in that position that I told you. Left left foot in front, right foot in front of the left foot. Right there. Stay in that position, all right? When I tell you to begin, you're going to take nine heel-to-toe steps down the line. Do you understand? All right. Why you You're going to take nine heel-to-toe steps down the line. It's going to look like this. 1 2 3. I'm going to take three, you're going to take nine, okay? Once you get to the ninth step, you're going to take a series of small steps. You turn back to the line. You okay? >> That's fine. >> Okay. You're going to take a series of small steps. You turn back to the line. And then you're going to take nine heel-to-toe steps back down the line. Do you understand? >> Yes. >> All right. You're going to keep You're going to count your steps out loud. Keep your arms out your side at all times, okay? Do not stop the test until you have completed it. Do you understand? >> Yes. >> Okay. You may begin. Do you understand exactly this test? Okay. Next test you're going to do is the is the the one-leg stand, okay? So, it's going to look like this, all right? Either leg. It's going to be your right foot or your left foot. You're going to bring it approximately 6 in off the ground, okay? It's going to be 1 1,001 1,002 1,003 1,004. All right? Your foot is going to be pointed up. And you're going to have it elevated, all right? You're going to keep your arms out your side. Do you understand? >> Yes. >> Okay. You may begin. Okay. Just do me a favor, turn around, please. You're going to be arrested for driving while intoxicated, okay? Excuse me. 504 gun. He's out of few more seconds to go. I got to go with you. We have one right here. So, I see right here in the car. I know he was over here and that he got to go over here. Just sit down. Do you have anything in the vehicle that you need? You have Where's your phone at? >> My phone. >> It's on my phone, boy. >> Nah, can we get $2 off Can we get that We have one right here. >> Okay. All right. Let me just check it real fast. >> Yeah, I think I see it. >> All right. I'm just going to check it. >> What's up? >> Should be All right. >> Now the focus shifts from the roadside test to the arrest procedure. The officer is checking whether the driver needs anything from the vehicle before they leave. That might seem routine, but these small steps matter during an arrest. Officers have to secure the scene, account for personal property, and make sure the vehicle and its contents are handled appropriately. Meanwhile, the driver is facing the reality that this traffic stop is no longer ending with a warning. >> I'll grab a stuff for the NDA. >> [clears throat] [groaning] >> It's not in there. >> Huh? >> Everything's good. It's clear. >> All right. It's clear. >> Keys are in there. >> Keys are in it? >> Yeah. >> Um I'll follow you in. Um Dispatch Dispatch Can you see if there's a county unit available to assist with the traffic accident on Galpin Road? I'm going to have to call 501 and this is the the boxing. Dave Can I go? >> Yes. >> You okay there? >> Yes. >> What happened? Screwed up my back. >> What happened? >> What happened there? Stop just right here. What's up? Just watch your step right here, all right? >> [clears throat] >> Just going to make a left here, all right? Go straight, make a left. Make a left. Make a left. >> Make another left. >> Make a left. >> Okay. >> Yep. Come to a full stop right here. >> All right. >> Keep going. Stop. >> [snorts] >> You want to go up in the elevator? Yeah, go ahead. Make a right. Make a right. Make a right. All right. Go all the way down. Just going to take a seat right here, please. Okay. [snorts] I'm just going to take this and read this for this, all right? >> After all the roadside testing, the arrest, and the long trip to the next location, the situation is finally settling down. But here's the takeaway. A DUI investigation doesn't hinge on one single moment. Officers typically build the case from the totality of what they observe, driving behavior, interaction with the driver, field sobriety performance, and other evidence. So, the real question is, did everything the officer observed add up to probable cause for that arrest? That's where the legal battle begins.