3. As used in this act:
"Authorities" means the New Jersey Turnpike Authority and the South Jersey Transportation Authority.
"Commissioner" means the Commissioner of Transportation.
"Eligible public highways" means public highways as defined in section 3 of P.L.1984, c.73 (C.27:1B-3) of which portions have been determined by the commissioner to be appropriate for a 65 miles per hour speed limit based on such criteria as determined by the commissioner. Public highways under the jurisdiction of counties and municipalities shall not be eligible public highways.