In the absence of an official sign to the contrary which has been installed by the city, between the hours of 8:00 a.m. and 6:00 p.m., on all days except Sundays, Independence Day, Thanksgiving Day and Christmas Day, parking shall be regulated by parking meters where the same have been installed by the city. The presumption shall be that all installed parking meters were lawfully installed by the city.
(1989 Code, § 15-606)