Mobile sources represent the largest source of air pollution in New Jersey.  Cars, trucks, buses, off-road construction vehicles, locomotives, marine engines and planes are all considered mobile sources of air pollution. While emissions from individual cars are relatively low, there are millions of diesel and gasoline vehicles travelling in and through New Jersey every day emitting thousands of tons of pollutants including particulate matter, oxides of nitrogen, air toxics and greenhouse gases. Every year, hundreds of New Jerseyans die prematurely and suffer heart and lung illnesses due to fine particulate matter, commonly called soot.

The Bureau of Mobile Sources protects public health and the environment by reducing air pollution from motor vehicles, engines, and the fuels used to operate them, and by encouraging travel choices that minimize emissions. We are also responsible for implementing statewide, comprehensive Inspection and Maintenance (I/M) emissions testing for motor vehicles. By reducing mobile source emissions, New Jersey’s communities are more liveable.

Mandatory Diesel Retrofit Program

The Diesel Retrofit Law of 2005 required that the following classes of diesel vehicles be retrofit with the costs of the retrofit reimbursed by the state:

• School Buses
• Solid Waste Vehicles that are publicly-owned or used to perform Solid Waste services under a public contract
  
• Commercial Buses
• Publicly-owned on-road vehicles and off-road equipment
  
  

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Idling Restrictions

Idling vehicles contribute heavily to local air quality. All vehicles are subject to the state’s three minute idling law including cars, trucks, buses and other motor vehicles.

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Idling Alternatives and Demonstration Projects

Learn about idling alternatives to reduce emissions and businesses already using retrofit equipment and see where truckstop electrification is available in N.J.

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School Bus No Idling Pledge

Ask your school district to go beyond compliance with the idling law to protect the air our children breathe. Learn how parents can participate in idling reduction.

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Heavy Duty Diesel Vehicle Inspection Program

Heavy duty vehicles are subject to opacity or smoke testing, annual inspections, and random roadside inspections.

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Reducing Soot at the Ports

Our N.J. ports are a hub of commerce and require diesel power to operate the ships, tugboats, cranes, trucks, trains, planes and more….learn about the public and private efforts underway to reduce emissions at the ports.

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