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May 19, 2022 <br />66 <br /> <br />the vertical curve would then be one hundred five (105) feet [the product of fifteen and <br />seven equals one hundred five (15 • 7 = 105)]. <br />2. The grade within the diameter of a turnaround at the terminus of a permanent cul-de-sac <br />shall be as specified in Table A Street Grade and Intersection Standards. <br /> <br />(h) Horizontal Alignments. Horizontal street alignments shall be measured along the <br />centerline. Horizontal curves shall be used at all angle changes in excess of two (2) <br />degrees. Single, long radius curves shall be used rather than a series of curves with <br />varying radii and/or a series of short curves separated by short, straight segments. The <br />minimum horizontal curve radius for streets shall be one hundred and fifty (150) feet. <br />1. Perimeter Streets. Plans with street locations along the perimeter of a property shall be <br />required to show building setback lines and clear sight triangles within the adjacent <br />properties. Permission shall be obtained from the adjacent landowner. <br />2. Roadway Alignment. The centerline of the street roadway shall correspond with the <br />centerline of the street right-of-way. <br />(i) Street Intersections. <br />1. Multiple intersections involving the junction of more than two streets are prohibited. <br />2. The distance between the centerline of streets intersecting at grade with a local street shall <br />be no less than one hundred and fifty (150) feet measured along the centerline of the street <br />being intersected based on the safe stopping distance of a road with a design speed of <br />twenty-five (25) mph at a moderate grade. <br />3. The distance between the centerline of streets intersecting at grade with a collector street <br />shall be no less than three hundred (300) feet measured along the centerline of the street <br />being intersected based on the safe stopping distance of a road with a design speed of forty <br />(40) mph at a moderate grade. <br />4. The distance between the centerline of streets intersecting at grade with an arterial street <br />shall be no less than one thousand three hundred and twenty (1320) feet measured along <br />the centerline of the street being intersected based on the safe stopping distance of a road <br />with a design speed of fifty-five (55) mph at a moderate grade. <br />5. Right angle intersections shall be used whenever possible. No street shall intersect another <br />at an angle of less than seventy-five (75) degrees.