This is now illegal in the Garden State.
New Jersey Monday (May 4) made ârolling coalâ illegal in the Garden State.
Gov. Chris Christie, a possible 2016 Republican presidential candidate signed a law making it illegal to retrofit âany diesel-powered vehicle with any device, smoke stack, or other equipment which enhances the vehicleâs capacity to emit soot, smoke, or other particulate emissions.â
New Jersey already has a law on the books banning modifications to a vehicle to make it emit smoke, and such modifications are already illegal under federal environmental law.