Horizontal street curves shall have the following minimum radii of centerline curvature:
Primary and Secondary Routes |
300 Feet |
Arterial and Collector Streets |
200 Feet |
Residential Streets |
100 Feet |
A minimum tangent of at least one hundred (100) feet shall be provided between reversed curves on all residential streets; greater tangential lengths shall be required on collector and arterial streets and other higher order thoroughfares.
The Commission may modify the aforementioned minimum standards in the following situations:
(a) When a collector or residential street's lines deflect from each other at any point by more than ten (10) degrees, they shall be connected by a curve with a radius adequate to insure a sight distance of not less than two hundred (200) feet or with such greater radius as the Commission may deem necessary for the particular situation.
(b) For arterial streets, curves with radii adequate to insure longer sight distances may be required by the Commission.
(c) In subdivisions where the street pattern is curvilinear, curves shall have radii acceptable to the Commission.