Overview
- Contran published a resolution authorizing saliva-based drogômetros for Lei Seca operations, marking the official approval for triage devices to be used in traffic checks.
- Experts and authorities warn rollout will be gradual because devices must be certified by Inmetro, each unit needs metrological verification, and markets will require homologation of imported models.
- A positive drogômetro result is expected to require laboratory confirmation by saliva, urine, or blood tests, which raises operating costs and delays before cases can be proved in court.
- Brazilian enforcement still relies on existing alcohol rules: readings from 0.05 to 0.33 mg/L trigger administrative sanctions while a value equal to or above 0.34 mg/L is an objective reference for the crime of drunken driving.
- Implementation faces practical obstacles for drivers and police, since more than 3.7 million Lei Seca infractions have been recorded through May 31, 2026 with 66% for breathalyzer refusal, meaning non‑cooperation and training needs will shape real-world use.