nt hours or fraction thereof; (iv) The maximum charge; (v) The time the lot closes. In the event that afternoon, evening, or night parking fees will be higher than the daytime fees, then such higher fees shall also be posted at the entrance of the parking lot in addition to the daytime parking fees. Each permittee shall install and maintain in a conspicuous place on the parking lot, which place may be designated by the Board, a sign with letters and numerals at least six inches high and one-inch stroke in contrasting colors showing a complete schedule of parking fees applicable during any business day showing all rates, changes in rates and the hours such changes become effective. If any letters or numerals on such signs exceed 12 inches in height, then all other numerals and letters relating to parking fees shall be not less than one-half the height of the largest letter or numeral on the sign. All fractions of time shall be spelled out in letters. It shall be unlawful for any permittee or the permittee’s agents or employees to charge or collect any parking fees for the parking of any vehicle at a rate in excess of the rate posted at the entrance of the lot at the time the vehicle was accepted for storage, nor shall any permittee alter or change any of their posted schedules of fees by superimposing another and different sign thereon, or otherwise, during the course of any business day while the lot is open for business; provided, however, that any posted schedule of fees may be changed prior to the opening of any lot for business at the beginning of any business day, and the fee schedule posted at the entrance of the lot may be changed at the time of change to a night rate and to a second night rate change after 1:00 o’clock a.m. (2) Each permittee shall file with the Board and post on the parking lot within 30 days after the effective date of this subdivision a complete and accurate schedule of rates to be charged specifying therein the time and the dates for which such rates are applicable. Applicants for parking lot permits shall file such a schedule with their application and post such schedule on the lot before operating the parking lot. No charge other than the rates specified in such schedule shall be made except as hereinafter provided.