Minimum center-line radius on streets shall be:
A. Major streets—five hundred (500) feet.
B. Secondary streets—two hundred fifty (250) feet.
C. Flat and hillside, local—one hundred (100) feet.
D. Steep hillside, local—seventy-five (75) feet.
('65 Code, § 31-105) (Ord. No. CS-622 § 1 (part))