When authorized by the Board of Appeals, the following shall be the principal conditional uses in a D-5 metropolitan commercial-service district.
(a) Parking structures and lots. Subject to the conditions and requirements of the D-4 district; except, that ground floor street frontage may also be used for parking of passenger vehicles.
(b) Bus terminals. Depots and terminals for transit buses.
(Ord. 2046, passed 4-11-1968)