Exhaust Noise in Hawaii
Vehicle type: Truck
Conditional
Hawaii limits exhaust noise to 95 decibels measured at 20 inches from the exhaust outlet. All vehicles must have functioning mufflers and exhaust systems in good repair.
Get the full breakdown — keep it in your glovebox. $5
Know exactly what the law says. Have proof you checked.
Get Full Report — $5One-time purchase. Instant download + emailed to you.
Frequently Asked Questions
Are exhaust noise legal in Hawaii?
Hawaii limits exhaust noise to 95 decibels measured at 20 inches from the exhaust outlet. All vehicles must have functioning mufflers and exhaust systems in good repair.
What are the exhaust noise limits in Hawaii?
Hawaii limits exhaust noise to 95 decibels measured at 20 inches from the exhaust outlet. All vehicles must have functioning mufflers and exhaust systems in good repair. For specific numeric limits and thresholds, see our full compliance report.
Are there exceptions for exhaust noise in Hawaii?
Yes, there may be exceptions and exemptions. Get the full details including medical exemptions and edge cases in our compliance report.