New Jersey Outlaws “Rolling Coal” in Diesel Vehicles

Modifying diesel vehicles to produce more pollution is now illegal.

Good news for environmentalists: “Rolling coal” was just outlawed in the state of New Jersey. Rolling coal involves modifying a diesel vehicle to bypass its stock clean air restrictors, which reduce the amount of soot and pollution that escapes the exhaust pipe. Disabling these restrictors allows the diesel vehicle to spew thick, black clouds of smoke and soot when accelerating or revving the engine.

Now, New Jersey Gov. Chris Christie signed legislation to make it illegal to retrofit diesel vehicles with any device, exhaust, or equipment that increases the amount of soot, pollution and smoke into the air.

Interestingly enough, according to, the bill may be redundant, as an article points out that, “the State Department of Environmental Regulations say that vehicles ‘shall not emit visible smoke, whether from crankcase emissions or from tailpipe exhaust, for a period in excess of three consecutive seconds.’” In other words, according to the U.S. Environmental Protection Agency, rolling coal has always been illegal because it is against federal law to modify trucks to increase pollution.

There is no information regarding the fines that could be indicted, as it is up to the Department of Environmental Protection to establish fines. However, other states appear to be close behind New Jersey, with a similar bill making its rounds in Illinois, where fines could reach $5,000 for rolling coal.

Take a look at the video below to see an example of a diesel truck rolling coal.