N.J. Stat. § 40:73-3: No officer or employee to receive free service; exceptions

No such officer or employee shall accept or receive, directly or indirectly, from any person operating within the territorial limits of said municipality any interurban railway, street railway, gas works, waterworks, electric light or power plant, heating plant, telegraph line, telephone exchange, or other business using or operating under a public franchise, any frank, free pass, free ticket, or free service or accept or receive directly or indirectly, from any such person any other service upon terms more favorable than is granted to the public generally, but such prohibition of free transportation shall not apply to policemen or firemen in uniform. Nor shall any free service to city officials heretofore provided by any franchise or ordinance be affected by this section.