A Vail Police officer stopped a 21-year-old Argentinian student at midnight on January 13, 2020, after observing lane deviation and an improper turn signal on I-70. What followed was a textbook DUI investigation — legally clean from start to finish — and a masterclass in how voluntary statements, without any deception and without any coercion, can build an airtight case. WHAT WE ANALYZE IN THIS VIDEO: ✅ Was the traffic stop legally justified? (4th Amendment / Terry v. Ohio, 1968) ✅ Were the field sobriety tests administered correctly? (NHTSA SFST standards / Daubert, 1993) ✅ Did the driver's pre-arrest statements change the outcome? (5th Amendment / Miranda, 1966) ✅ What is the difference between the voluntary roadside PBT and the mandatory evidentiary test? (C.R.S. § 42-4-1301.1) ✅ What probable cause standard applied to this arrest? (Illinois v. Gates, 1983) CASE OUTCOME: BAC: 0.167% — more than twice Colorado's legal limit of 0.08% Plea: Guilty to DUI Sentence: $994.50 total fines | 0 days jail | 48 hours community service | 12 months probation Police report: "Extremely cooperative and polite during his contact with the officer." GRADES: 🟡 Officer: B+ — Legally sound stop and arrest. Lost one point for not explaining PBT vs. evidentiary test distinction. 🟠 Driver: C+ — Exemplary human conduct. Poor legal decision-making at every critical juncture. LAWS AND CASES CITED: - U.S. Const. Amend. IV (Fourth Amendment — Search and Seizure) - U.S. Const. Amend. V (Fifth Amendment — Self-Incrimination) - Terry v. Ohio, 392 U.S. 1 (1968) - Miranda v. Arizona, 384 U.S. 436 (1966) - Illinois v. Gates, 462 U.S. 213 (1983) - Pennsylvania v. Mimms, 434 U.S. 106 (1977) - Daubert v. Merrell Dow Pharmaceuticals, Inc., 509 U.S. 579 (1993) - C.R.S. § 42-4-1001 (Failure to Maintain Lane) - C.R.S. § 42-4-1301 (Driving Under the Influence) - C.R.S. § 42-4-1301.1 (Express Consent Law / Voluntary PBT) FAIR USE NOTICE: This video is intended for educational and commentary purposes. All bodycam footage is used under the Fair Use doctrine (17 U.S.C. § 107) for purposes of criticism, commentary, and education. No reproduction or reuse is authorized without permission. #DUI #BodycamAnalysis #KnowYourRights #ColoradoLaw #DUIStop #FieldSobrietyTest #FifthAmendment #FourthAmendment #ExpressConsent #AuditTheLaw #LegalAnalysis #PoliceBodycam

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