California will go from permitting among the noisiest off-road vehicles in the nation to requiring that they be among the quietest.

The Department of Parks and Recreation says a law effective in January is the most sweeping reform of California’s off-highway vehicle program in its 30-year history. It brings the state’s noise restrictions in line with federal standards for manufacturers.

It requires that gas taxes paid by owners of non-registered off-highway vehicles go to conservation, repairing off-road damage, and law enforcement. It also channels all the money from off-highway vehicle fines and forfeitures to local law enforcement instead of giving the state half the money.