New Jersey Statutes Title 39. Motor Vehicles and Traffic Regulation 39 § 4-213

Whenever the Attorney-General shall determine that an emergency condition exists with regard to the flow of vehicular traffic in this State, he may, through police agencies under his control, determine and control the direction of the flow of such traffic on any State highway, municipal or county road, including the right to detour, reroute or divert any or all traffic necessary to remove the emergency then existing. Said traffic may be detoured, rerouted or diverted to other State highways, or municipal or county roads. The Attorney-General further shall determine the type of vehicle or vehicles permitted to be operated on such State highway, or municipal or county road.