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

In Pennsylvania, the exhaust laws are governed by The Vehicle Code, Title 75, Section 4925.2. According to this law, any exhaust system and its components must meet certain noise limits. The maximum allowable decibel level is 95 dB at a speed of 50 mph, or at a steady cruising speed of 35 mph. The law also states that any exhaust system must not be installed, altered, modified, or maintained in a manner that will amplify or increase the noise emitted from an automobile engine beyond that of the original factory specifications. If an exhaust system is too loud and goes beyond the limits set by The Vehicle Code, it is considered to be a noise violation. This could result in a fine or even a warning letter from the police. It is important to note that fines vary by county, so make sure to check with your local law enforcement before making any modifications to your vehicle. In Pennsylvania, it is also important to be aware of certain restrictions when it comes to aftermarket exhaust systems. According to The Vehicle Code, it is illegal to use a non-original exhaust system that does not meet the noise limits or that is not approved by the state. It is also illegal for any vehicle to emit any sound louder than 90 decibels at a speed of 50 mph. It is important for Pennsylvania drivers to be aware of all the laws and regulations surrounding exhaust systems, to avoid any potential legal penalties. By following these laws, you can ensure that your vehicle is running safely and legally.

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