If a centerline has been established for a highway, the alignment of the highway shall conform to the established centerline. If no centerline has been established, the alignment shall conform to the following requirements:
(a) The alignment shall be substantially as shown on the circulation element of the general plan;
(b) The centerline curve radius of an arterial highway shall be not less than one thousand five hundred feet;
(c) The centerline curve radius of a collector highway shall be not less than one thousand feet;
(d) Highways shall intersect with streets and other highways as nearly at a right angle as is practical.
(Ord. 537 § 2 (part), 1985)