This law requires all motor vehicles with internal combustion engines to have a working muffler that prevents excessive or unusual noise. You can't use devices like cutouts or bypasses on mufflers or exhaust systems.

If you're driving a passenger vehicle off-road, you also need to have a properly maintained muffler, but some exceptions apply. Vehicles participating in organized racing events or those not using internal combustion engines aren't subject to these rules.

This law makes it illegal for any business that deals with selling or installing motor vehicle exhaust systems, such as mufflers, to offer, sell, or install these systems unless they meet the required regulations and standards. This includes both original and nonoriginal parts. If a business violates these rules, it's considered a misdemeanor, which is a minor criminal offense.

This law deals with testing vehicular exhaust systems for noise compliance if the vehicle has been cited for excessive noise under specific sections. Referee stations will conduct the tests and can issue compliance certificates if a vehicle meets the noise limits. For most vehicles weighing under 6,000 pounds, the exhaust must not be louder than 95 decibels according to the latest standards.

The compliance certificate must detail the vehicle and exhaust system information. Stations charge a fee to cover testing costs, and this fee contributes to the Vehicle Inspection and Repair Fund. Vehicles can be exempt if meeting the law causes unreasonable hardship without enough noise control benefit. This law is temporary, expiring on January 1, 2027.

This law explains the process for testing and certifying exhaust systems of motor vehicles that have been cited for noise violations. It specifies that designated testing stations can issue compliance certificates if a vehicle's exhaust meets certain standards. Vehicles up to 14,000 pounds may receive certificates if they adhere to noise limits set by other regulations. Specifically, vehicles under 6,000 pounds must not exceed 95 decibels, while those between 6,000 and 14,000 pounds must comply with specific limits. Certificates will detail vehicle and exhaust system information and a fee is charged to cover administrative costs, going into a dedicated fund. Exceptions exist if compliance would be unreasonably burdensome without benefiting noise control.

This regulation is set to be enforced starting January 1, 2027.

This law makes it illegal to modify a car’s exhaust system with a device called a 'whistle-tip.' A whistle-tip is something added to the exhaust pipe that makes a loud, high-pitched noise when you're driving. You’re not allowed to operate a car if it has been modified with a whistle-tip. It’s also against the law to be in the business of installing these devices on others' cars. Basically, using or installing whistle-tips on vehicles is prohibited.

This law mandates the California Highway Patrol to test sound-activated enforcement devices from at least three companies to gauge their effectiveness in enforcing noise regulations related to vehicle mufflers. By January 1, 2025, the department must report to the Legislature on various aspects like device accuracy, false positives, necessary device maintenance, and optimal installation locations.

The report should also discuss training for device operators, maintain confidentiality of any identifying information, and recommend whether these devices should be adopted for law enforcement.

Each device tested should record audio and video, delete non-violation evidence, and adhere to international noise measurement standards. All collected data must remain confidential, not disclosed to other agencies, except as required by law.

If a retailer sells or installs a car exhaust system or muffler that doesn't meet legal requirements, they must either install a compliant system when the vehicle owner requests it or repay the owner for the costs of replacing it with a compliant one.

If someone is taken to court for having a noisy exhaust or illegal exhaust system, the case can be dismissed if a certified station has determined the exhaust is compliant, or if the person reasonably believed their exhaust was in good condition and legal.

This law says you can't change your car's exhaust system to make it louder than what's legally allowed. Specifically, if your vehicle weighs less than 6,000 pounds, the noise should not be louder than 95 decibels, according to the latest testing standards. This rule doesn't just apply to new parts; it includes any non-original exhaust equipment too. Basically, your car's exhaust sound needs to stay within legal noise limits.

This law section applies to vehicles under 14,000 pounds that have violated specific exhaust system regulations. If a vehicle is found in violation, the court requires proof that the exhaust system complies with safety standards within three months. If this proof isn't provided, the court will notify the DMV, potentially affecting the vehicle's registration.

Additionally, before renewing a vehicle's registration, the DMV will check for any court holds due to these violations. If there's a hold, they won't renew the registration until they get confirmation from the court that the vehicle complies. This law takes effect on January 1, 2027.

This law states that a vehicle's exhaust gases should not come out from the side of the vehicle at a height between 2 feet and 11 feet above the ground.

This California law says you can't drive a vehicle that releases too much smoke, flame, gas, oil, or fuel residue. Big trucks over 14,000 pounds can't have visible smoke unless it's part of a specific cleaning process for their emissions.

If a vehicle violates this rule, you generally have 45 days to fix the issue, and you can still use the vehicle during this time. However, farm vehicles get a longer time frame, at least 75 days, to make repairs. If your vehicle's emission controls are tampered with on purpose, it must be taken off the road immediately. Additionally, these rules apply to U.S. government vehicles as per federal law allowances.

This law says that motor vehicles need to minimize air pollution by not emitting visible smoke for more than 10 seconds when they're less than 4,000 feet above sea level. Vehicles sold or registered as new after January 1, 1971, must not emit smoke darker than a certain standard on a smoke chart. Vehicles sold or registered before that date have a slightly different standard. This law also applies to vehicles owned by U.S. agencies, depending on federal law.

This law requires that the interior of a vehicle is well-sealed to prevent engine or exhaust fumes from entering. Additionally, parts of the exhaust system, like the manifold and muffler, must be built and kept in a condition that prevents gas leaks.

This law requires that the flooring in all motor vehicles be well-built and free from unnecessary holes to prevent fumes, exhaust gases, or fire from getting inside. Additionally, vehicle floors should not be covered with oil or substances that might cause someone to slip and get injured.

This law states that you can't drive or park a vehicle on a highway unless the fuel tank has a cap or cover made of non-flammable material closing the filling spout.

This law makes it illegal to operate or leave a vehicle that is a major polluter on a highway. You must have proper pollution control devices on your vehicle as required by law, and these devices should not be tampered with or altered. Selling or installing devices that change the vehicle's pollution control system is also prohibited. If you knowingly break these rules, you could face the highest possible fines without any reduction. After being warned by a traffic officer, you can only drive your car to specific locations until it is fixed.

You must show proof of correction or exemption if you receive a citation for violation. However, some changes are allowed if they meet air quality standards. Specific performance parts can be installed when transferring a motorcycle to a new owner. The law also applies to government vehicles, as allowed by federal law.

This law states that if an extra gasoline tank was added to vehicles made in 1973 or earlier before 1974, it doesn't break the rules about pollution controls as long as the vehicle needed an emissions control system. The 'auxiliary gasoline fuel tank' refers to a specific definition related to the Health and Safety Code.

This law states that certain emergency vehicles, such as those used by police officers, firefighters, or paramedics, are exempt from the rules related to pollution control devices on vehicles. This means these vehicles don't have to follow the usual state laws and regulations about reducing vehicle emissions.

This law states that certain vehicles, including those used for mosquito and pest control, emergency vehicles (except those mentioned in a specific part of another law), and private ambulances contracted with public agencies, don't have to follow the usual rules for pollution control devices on cars in California.

The State Air Resources Board is responsible for creating reasonable rules to limit vehicle emissions on highways to protect public health and safety. These regulations must be based on advice from the commissioner and cannot be stricter than the original emission standards that applied when the vehicle model was first made. This only applies to vehicles that are legally required to have emission control devices.

The State Air Resources Board is tasked with setting standards to control air pollution from the exhaust of cars made between 1955 and 1965. These standards focus on ensuring the car's timing and carburetor are well-adjusted and the spark plugs are working correctly to protect public health and safety.

If a traffic officer tells you that your vehicle doesn't meet certain pollution control regulations, you have 30 days to get a compliance certificate or have the vehicle checked to ensure it complies. Once you get a compliance certificate, it's valid for one year as long as no pollution control devices are tampered with. This applies to everyone, including U.S. government vehicles as allowed by federal law.

This law requires owners of heavy-duty vehicles over 14,000 pounds to keep a compliance certificate in the vehicle. This certificate proves the vehicle has passed inspection as part of California's Heavy-Duty Vehicle Inspection and Maintenance Program. An electronic copy is also acceptable. However, you're exempt if the certificate is being renewed or the vehicle is unattended. If you don't have the certificate when required, it results in a violation.

If you are driving a heavy-duty vehicle weighing over 14,000 pounds on the road, you must have a compliance certificate proving your vehicle has passed inspection and maintenance checks. You need to show this certificate if a police officer asks for it. It is illegal to show a certificate that was not issued for your vehicle.

This law states that if a traffic officer tells you your car doesn't meet certain vehicle standards, you can't drive it for more than 30 days unless you fix it and get a compliance certificate. Alternatively, the Department can check and confirm your car now meets the necessary standards. Once you have this certificate, it serves as proof your car meets the standards for one year.

If the State Air Resources Board asks, a California Highway Patrol officer can order a vehicle to be stored if it's in their jurisdiction. This happens when the vehicle needs to be removed from use. The car owner is responsible for paying the towing and storage fees.