N.J. Stat. § 26:4-130
Except as otherwise specifically provided in this chapter, any penalty incurred for a violation of any of the provisions of this chapter shall be sued for and recovered by the State department, or by the local board of the municipality within which the violation occurred.
Every municipal court shall have jurisdiction over proceedings to enforce and collect any such penalty, if the violation has occurred within the territorial jurisdiction of the court. The proceedings shall be summary and in accordance with the Penalty Enforcement Law (N.J.S. 2A:58-1 et seq.). Process shall be either in the nature of a summons or warrant.
The court may cause any defendant who shall fail to pay forthwith the amount of the judgment rendered against him, and all costs and charges incident thereto, to be committed to the county jail for any period not exceeding ninety days.
All moneys recovered in any such proceedings shall be paid to the plaintiff therein and applied by such plaintiff to any purpose for which it may be legally authorized to expend money.
N.J.S. § 26:4-130