As a condition of employment on behalf of a municipality, a person hired to remove illegally parked motor vehicles may accept a personal check but in any case is required to accept cash or a certified or bank check, and must also recognize at least two national bank credit cards, any of which may be used as payment for any towing and storage charges. (Added 1977, No. 249 (Adj. Sess.), § 5, eff. April 19, 1978; amended 1989, No. 9, § 2.)