New Jersey Statutes Title 40. Municipalities and Counties 40 § 69A-21

No petition for submission of the question of adopting an optional plan of government pursuant to section 1-18 et seq. of this act  1 may be filed while proceedings are pending pursuant to another such petition, or under an ordinance passed or petition filed pursuant to section 1-1 of this act,  2 or while proceedings are pending pursuant to any other statute for the adoption of any other charter or form of government available to the municipality, nor within four years after an election shall have been held pursuant to any such petition filed pursuant to section 1-18 et seq. of this act.