Prohibits modification of mufflers and exhaust systems to produce audible sounds.*

This bill prohibits modifying a vehicle's muffler or exhaust system to amplify noise beyond the original factory level, directly affecting car owners and operators who install aftermarket exhaust systems. It requires vehicle inspections to check mufflers and exhaust systems for excessive or unusual noise, expanding current inspection standards that previously focused only on emissions. Violations carry a penalty of up to $500 in fines, 30 days in jail, or both. The bill amends existing laws (R.S. 39:3-69(c) and R.S. 39:3-70(b)) to clarify the prohibition and align inspection requirements with noise regulations.