438.01 VEHICLE REGISTRATION.
   (a)   No person shall operate any motor vehicle upon any street of the City without having first registered the same as provided by the-laws of the State, and such vehicle shall have the registration number plates displayed thereon in the manner and place provided for by the laws of the State.
   (b)   When any trailer is attached to any motor vehicle in use upon the streets of the City, such trailer shall carry a duplicate registration number as required of any other motor vehicle.
(1958 Code § 16.3)