It shall be unlawful for any person to stop, stand, or park a vehicle on any street within an area designated by resolution of the city council as a preferential parking area on the days and during the hours when preferential parking restrictions are in effect, except:

(a) A vehicle registered to or controlled and exclusively used by a person residing in the designated preferential parking area when such vehicle properly displays a valid preferential parking permit issued in the manner hereinafter provided by this division;

(b) A vehicle being used by the guest of a person residing in the designated preferential parking area when such vehicle properly displays a valid preferential parking guest pass issued in the manner hereinafter provided by this division, and is parked on the street in front of the parcel of real property for which the guest pass was issued;

(c) The following additional vehicles, which shall be exempt from the parking restrictions applicable to a preferential parking area:

(1) An emergency vehicle, including but not limited to an ambulance, fire engine, or police vehicle;

(2) A vehicle which is under the control of a person providing services to a parcel of real property located in a designated preferential parking area, including but not limited to a delivery vehicle; and

(3) A vehicle registered to or used by disabled persons when such vehicle displays a distinguishing license plate or placard issued by the California Department of Motor Vehicles. (Ord. No. 1633, § 1 (part).)