No person shall drive any vehicle, except an authorized emergency vehicle (as provided in this title), at a speed greater than:
(A) The posted school speed limit on any street adjacent to any school or in any school zone between 7:30 a.m. and 4 p.m. on days when school is in session;
(B) Thirty-five miles per hour on Windle Street from First Street to Mountain Avenue, then eastward on Mountain Avenue to curve on Highway #6;
(C) Twenty-five miles per hour on other streets and on streets adjacent to schools at other times than that specified immediately above, unless otherwise posted.
(`85 Code, § 22-6 (part)) Penalty, see § 70.999