What are the laws about exhaust systems that are too loud?

In South Carolina, automobile law sets restrictions on how loud a vehicle’s exhaust system can be. According to the South Carolina Code of Laws, it is illegal for someone to operate a vehicle with a muffler cutout, bypass, or similar device, that allows too much noise or smoke. Motorcycles are also not allowed to have exhaust systems that exceed the sound generated by the original equipment manufacturer. The maximum sound level allowed is 95 decibels at an idle speed. The South Carolina Department of Motor Vehicles (DMV) enforces these regulations. If a vehicle is found to be in violation of the noise level regulations, the owner can be issued a ticket that carries a fine and/or points on their driver’s license. The DMV also has the authority to issue a warning letter to vehicle owners who are in violation of the exhaust system laws. This letter is issued if the officer can determine that the exhaust system is producing more noise than allowed. If the violation is not corrected within 30 days, the owner can face further penalties. The penalties for violating the South Carolina exhaust system laws become more severe with repeat offenses. For a third offense, a vehicle owner can face a fine of up to $500, and suspension of their driver’s license for up to 6 months. It is important to understand and comply with the laws about exhaust systems that are too loud in South Carolina to avoid such consequences.

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What are the laws about exhaust systems that are too loud?

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