SEC. 171.04. PARKING. (a) All curbs on driveways at the Airport are marked red, yellow, white or green. The parking of any vehicle upon any driveway where the curb marking is red is prohibited at all times. Yellow and white curb markings indicate respectively loading zone for commercial vehicles and loading zone for passenger vehicles, and parking on driveways for said purposes and at green curb markings may be only as hereafter provided. (b) Vehicles shall be parked only in those portions of the Airport set aside and designated and marked as parking areas. (c) No person shall park any vehicle upon any part of the Airport designated as “ Restricted Parking Area ” or “ Private Parking Area ” unless authorized so to do. (d) The “ Public Parking Area ” at the Airport is laid out into parking spaces marked by white lines so that vehicles may be parked at an angle from the driveways in such parking area. Persons using such parking area shall enter the same only at the place marked as “ Entrance ” and shall leave the same only at the place or places marked as “ Exit ”. In entering such parking area all drivers of vehicles shall follow the instructions of the parking lot attendant and shall park such vehicle in one of such parking spaces. No person shall park any vehicle across any line marking off such parking space and no person shall park their vehicle so as to use or occupy parts of two such parking spaces or upon any portion of the parking area marked for crosswalk. No person shall leave the parking area without the payment of all fees or charges due for use of such parking area. (e) All vehicles parked in the parking area designated for public parking shall at all times be under the control of the driver or owner of such vehicle and no parking attendant shall drive or handle such vehicle. (f) No person shall drive any motor vehicle within the public parking area at a speed which is not safe, taking into consideration the movement of motor vehicles and pedestrians therein, and in no event at a speed in excess of ten miles per hour. (g) The General Manager is hereby authorized to fix and establish such loading zones as the General Manager may deem necessary or advisable.