Parking meters shall be installed in each parking meter zone and shall be erected upon the curb or street immediately adjacent to the individual parking space hereafter described. Each parking meter shall be constructed and adjusted so as to show by a signal that the space adjacent thereto is or is not legally in use. Each parking meter installed shall indicate by a proper legend the legal parking time permitted by the insertion of any coin. When operated, each parking meter shall also indicate by proper signal the duration of the period of legal parking during the immediate period of operation and, on the expiration of such period, shall indicate illegal parking or overparking. (Ord. 383. Passed 7-17-50.)