No, Costa Rica’s Ley de Tránsito por Vías Públicas Terrestres (Law 9078) and Reglamento de Tránsito (Decreto 41639-MOPT) explicitly prohibit exhaust systems emitting noise exceeding 93 decibels (dB) as measured by MOPT-approved equipment. Violations trigger fines up to ₡250,000 ($450 USD) and mandatory exhaust modification. Local municipalities, such as San José’s Municipalidad, enforce additional noise ordinances under Ley 7600 (Environmental Law), with 2026 amendments tightening penalties for repeat offenders.
Key Regulations for Loud Exhausts in Costa Rica
- Decibel Limits: Exhaust noise must not exceed 93 dB (A-weighted) per MOPT Technical Standard 3100-95; enforcement uses calibrated sound meters during roadside inspections.
- Modification Restrictions: Aftermarket exhaust systems must retain original manufacturer noise levels or comply with MOPT’s homologation process (Decreto 36499-MOPT), requiring certification from Laboratorio de Ensayo de Materiales (LEM).
- Local Enforcement: Municipalities like Heredia and Alajuela deploy Unidades de Control de Ruido to issue citations, with 2026 budget allocations increasing patrols near residential zones.
Non-compliance risks impoundment under Artículo 217 of the Traffic Law, while repeat violations may lead to vehicle registration suspension. Tourist vehicles face stricter scrutiny due to Decreto Ejecutivo 42547-MP, which mandates compliance checks at border crossings.