This bill amends existing New Jersey laws to prohibit the installation or modification of mufflers and exhaust systems in a way that amplifies or increases the noise emitted beyond what was originally installed on the vehicle. The penalties for violating this provision include a fine of up to $500, imprisonment for up to 30 days, or both. Additionally, the bill mandates that motor vehicle inspections must now include checks for excessive or unusual noise from mufflers and exhaust systems, expanding the current focus on emissions and emission-related items.

The bill also introduces new language regarding the requirements for vehicle horns and the use of audible warning devices, specifying that no vehicle should emit an unreasonably loud sound. It establishes that every motor vehicle must have a functioning muffler to prevent excessive noise and outlines the penalties for non-compliance. Overall, the legislation aims to enhance noise control measures for motor vehicles on New Jersey roads, ensuring that vehicles adhere to stricter noise regulations.