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A. The circulation system shall be designed to:

1. Discourage through traffic in residential subdivisions;

2. Require the minimum number of streets and intersections necessary to provide convenient and safe access to property;

3. Be arranged so as to maximize the number of building sites at or above the grades of the streets;

4. Avoid a combination of steep grades and curves;

5. Be arranged in proper relation to topography so as to result in usable lots, safe streets, reasonable gradients and minimum damage to terrain and existing vegetation;

6. Use land in the most efficient way;

7. Be properly related to all existing and proposed special traffic generators such as industrial, business and shopping districts, schools and churches; to population densities; and to the pattern of existing and proposed land uses;

8. Complement drainage patterns;

9. Preserve natural features such as watercourses, geology, etc.;

10. Allow for the efficient provision and extension of public utilities and services;

11. Implement the transportation element of the comprehensive plan;

12. Permit the trafficway to be centered within the right-of-way;

13. Provide safe sight distances and intersections;

14. Facilitate pedestrian traffic through the dedication of pedestrian trails or rights-of-way to provide access to public and other facilities and through the middle of long blocks;

15. Continue arterial, collector and local streets from adjacent existing subdivisions wherever possible; and

16. Minimize the potential for wind damage in areas where extreme wind conditions exist.

B. The city engineer shall develop and issue standards for street layout design including, but not limited to, standards for sight distances, corner roundings, street intersection angles and other elements of street layout design that affect the safety and efficiency of streets. Unless the city engineer has issued more stringent standards, the following apply as the minimum layout design standards for street arrangement:

1. Multiple cul-de-sac or dead-end streets extending from a single entrance are not permitted;

2. Cul-de-sac and dead-end streets shall not be more than six hundred (600) feet in length;

3. The number of intersections, especially between streets of different classification, shall be kept to a minimum;

4. Streets shall intersect at ninety (90) degrees or close thereto and in no case less than seventy-five (75) degrees. The distance between intersection centerlines shall not be less than one hundred fifty (150) feet;

5. No intersection shall be located near the brow of a hill or where an embankment blocks vision;

6. Proposed new intersections along one (1) side of an existing street shall, wherever practicable, coincide with any existing intersections on the opposite side of the street; otherwise the points of intersection shall be at least one hundred fifty (150) feet apart. [Ord. 01-05 § 7.]