(A) State highway system streets. It shall be unlawful to operate a vehicle in excess of the speeds or upon the streets or portions of streets of the state highway system listed in Ch. 75, Sch. I.
('84 Code, § 16-24)
(B) Streets not part of the state highway system. It shall be unlawful to operate a vehicle in excess of the speeds or upon the streets or portions of streets, not a part of the state highway system, listed in Ch. 75, Sch. I. ('84 Code, § 16-25)