(A) Subject to other and more restrictive limitations, a vehicle may be stopped or parked within 18 inches of the left-hand curb facing in the direction of traffic movement upon any one-way street unless signs are in place prohibiting such stopping or standing.
(B) The City Engineer is authorized to deter-mine when standing or parking shall be prohibited upon the left-hand side of any one-way street or when standing or parking may be permitted upon the left-hand side of any one-way roadway.
(C) The requirement of parallel parking imposed by this section shall not apply in the event any commercial vehicle is actually engaged in the process of loading or unloading freight or goods, in which case such vehicle may be backed up to the curb; provided, that such vehicle does not extend beyond the centerline of the street and does not block traffic thereby.
('81 Code, § 10.28.180)