The Director of Transportation shall install or cause the installation of parking meters and establish or cause the establishment of Mobile-Payment Systems, as provided in this subtitle. In the Director’s discretion and as the Director determines to be best suited for the traffic needs of a particular area, metered parking may be for a 15-minute, 30-minute, 1-hour, 1½-hour, 2-hour, or other time period. City Code, 1966, art. 31, §187 1976/83, art. 31, §131 Ord. 55-1346 Ord. 57-1108 Ord. 68-249 Ord. 69-416 Ord. 06-198 Ord. 16-537