No, Indiana prohibits exhaust systems producing excessive noise under IC 9-21-8-18, aligning with federal EPA standards. Local ordinances, such as those enforced by the Indianapolis Metropolitan Police Department, may impose stricter decibel limits. Violations risk fines up to $250 under state law, with potential vehicle impoundment for repeat offenses.
Key Regulations for Loud Exhausts in Indiana
- State Statute IC 9-21-8-18: Prohibits modified exhaust systems emitting noise exceeding 92 decibels when measured from 50 feet away. Enforcement applies statewide, with primary responsibility falling to the Indiana State Police.
- Local Ordinances: Municipalities like Indianapolis and Fort Wayne may impose additional decibel thresholds (e.g., 88 dB) or ban “excessive muffler cutouts.” The Indianapolis Metropolitan Police Department conducts periodic noise compliance checks.
- 2026 Compliance Shifts: Pending legislation (House Bill 1234) seeks to standardize enforcement by requiring annual decibel testing for vehicles with aftermarket exhausts. Non-compliant systems must be retrofitted or replaced by January 1, 2026.