NJDEP's Mandatory Diesel Retrofit Program

While there are federal engine emission standards in place for newer vehicles, heavy-duty diesel engines have a long service life allowing an older technology, higher-emitting engine to pollute for many decades before it is replaced with a newer, cleaner engine.  To address this gap, the Diesel Retrofit Law was passed in 2005 to clean up emissions from certain on-road, diesel-powered motor vehicles and non-road vehicles/equipment through the use of retrofit emission control technology.  The benefits of this law and the subsequent regulations adopted by the NJDEP are a reduction of the harmful diesel exhaust that NJ citizens are exposed to every day.  The regulations require a variety of vehicles and equipment to install retrofits by established deadlines at State expense.

There is no cost to the owners of regulated vehicles to install the Best Available Retrofit Technology (BART); the purchase and installation costs for the retrofit technology are reimbursed by the State.