N.J. Stat. § 27:7A-6
The commissioner, with respect to limited access highways under his jurisdiction, and the governing body of a county, with respect to limited access highways under its jurisdiction, shall have the authority to restrict the use of roadways in limited access highways to passenger motor vehicles, to prohibit the use of any roadway in limited access highways by certain classes of vehicles or by pedestrians, bicycles or other nonmotorized traffic or by any person operating a motorized bicycle or motorcycle and to make such other regulations as may be proper or necessary to carry out the provisions of this act; provided, however, if any highway or any portion or portions thereof over which autobuses lawfully operate is designated a limited access highway, or a part of a limited access highway, no such restriction or regulation shall prevent the use by autobuses, in accordance with other laws applicable thereto, of such portion or portions of such limited access highway as include such highway or portion or portions thereof, or of such portion or portions of such limited access highway as shall be necessary to provide ingress and egress for such autobuses in connection with such use.
N.J.S. § 27:7A-6