All traffic in or upon a public vehicular parking area, operational area, fuel storage area, public landing area, public ramp and apron area, public passenger ramp and apron area, public cargo ramp and apron area or public aircraft parking and storage areas must at all times comply with any lawful order, signal or direction of any authorized Port Authority representative. Where such traffic is controlled by traffic lights, signs, mechanical or electrical signals, or pavement markings, such lights, signs, signals and markings shall be obeyed unless an authorized Port Authority representative directs otherwise.