N.J. Stat. § 27:1A-43
The Legislature hereby finds and declares that the administration, development and enforcement of laws and regulations relating to traffic, and the regulation and control of the character, type, location, placing and operation of all official traffic control devices on the streets, highways and public places in New Jersey require co-ordination and co-operation between the State and individual local authorities; that although there should be a general, State-wide policy concerning the movement of traffic and traffic control devices, that policy should be sufficiently flexible to take into account such factors as aesthetics, practicability and community interests, and should permit a consideration of particular circumstances in individual municipalities; and that it is the purpose of this act to provide for the efficient formulation of such a flexible State-wide policy concerning the movement of traffic and traffic control devices in the public interest.
N.J.S. § 27:1A-43