No. Radar detectors are prohibited nationwide under Brazil’s traffic code, with enforcement by the National Traffic Department (DENATRAN) and local traffic authorities. Use risks fines, confiscation, and legal penalties.
Key Regulations for Radar Detectors in Brazil
- Federal Ban: Law No. 9.503/1997 (Brazilian Traffic Code) explicitly prohibits devices designed to detect speed enforcement systems, classifying them as illegal under Article 230.
- DENATRAN Enforcement: The National Traffic Department actively monitors compliance, collaborating with state traffic agencies (e.g., DETRANs) to conduct inspections and seizures during operations like “Operação Radar”.
- State-Level Penalties: Violations trigger administrative fines (R$ 195.23–R$ 293.47), vehicle retention, and mandatory equipment removal, with repeat offenses escalating to criminal liability under the Road Safety Law (Lei Seca).
Practical Implications
Commercial sale or possession of radar detectors is criminalized, with retailers subject to penalties under consumer protection statutes. Courts consistently uphold confiscations, as demonstrated in recent 2026 rulings by the Superior Court of Justice (STJ), which affirmed their incompatibility with public safety objectives. Alternative navigation tools (e.g., GPS apps with speed limit alerts) operate in a legal gray area but avoid direct detection interference.