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(A) Horizontal street curves shall have the following minimum radii of centerline curvature.
Primary and Secondary Routes
Arterial and Collector Streets
(B) A minimum tangent of at least 100 feet may be required between reversed curves on all residential streets; greater tangential lengths shall be required on collector and arterial streets and other higher order thoroughfares.
(C) The Commission may modify the aforementioned minimum standards in the following situations:
(1) When a collector or residential street's lines deflect from each other at any point by more than ten degrees, they shall be connected by a curve with a radius adequate to ensure a sight distance of not less than 200 feet or with such greater radius as the Commission may deem necessary for the particular situation;
(2) For arterial streets, curves with radii adequate to ensure longer sight distances may be required by the Commission; and
(3) In subdivisions where the street pattern is curvilinear, curves shall have radii acceptable to the Commission.
(Ord. 18, 2001, passed 6-14-2001) Penalty, see § 153.999