No person shall stop, stand or park a vehicle, other than a bus in a bus stop or other than a taxicab in a taxicab stand, when any stop has been officially designated and appropriately signed, except that the driver of a passenger vehicle may temporarily stop therein for the purpose of, and while actually engaged in loading and unloading passengers when the stopping does not interfere with any bus or taxicab waiting to enter or about to enter the zone.
(1992 Code, § 72.49) Penalty, see § 72.99