1. Cul-de-sacs shall be no longer than 500 feet;

2. Streets shall be related appropriately to the topography in order to minimize steepness of grade and reduce the need for excessive cut and fill; use of curvilinear streets and U-shaped streets shall be encouraged in residential subdivisions;

3. All streets shall be platted and constructed at the full width as required in this chapter and all other city ordinances;

4. Neighborhood residential streets within the proposed subdivision shall be located, designed and improved to provide adequate access for emergency services as determined by the fire marshal;

5. Where adequate emergency access has been provided, neighborhood residential streets should be located, designed and improved to prevent or discourage their use as shortcuts for through traffic and to mitigate the effects of through traffic. The subdivider shall be required to install improvements within existing or new rights-of-way in order to mitigate impacts of traffic from the subdivision on existing residences, to mitigate impacts or to improve livability in new subdivisions, and may be required to install other traffic calming measures as required by the public works director;

6. Where existing streets adjacent to or within a subdivision are of inadequate width or where the city’s capital improvements plan or comprehensive plan indicate need for a new street or additional right-of-way or realignment for an existing street, the subdivider shall make improvements to said streets pursuant to this title and as approved by the public works director and shall dedicate necessary right-of-way to the city in the filing of the final recorded documents;

7. Where residential subdivisions abut a major arterial, the subdivider shall provide a landscape buffer strip a minimum of 10 feet in width along the plat boundary abutting the arterial. The buffer strip shall consist of one row of evergreen conifer trees, spaced a maximum of 10 feet on center. Minimum tree height shall be six feet. The remainder of the buffer strip shall be promptly planted with low evergreen plantings that will mature to a total groundcover within five years. A permanent six-foot site-screening fence shall be placed at the property line. The buffer strip may become a separate lot or lots in which owners of all lots within the plat have an undivided interest or may be held as a separately held tract inseparable from the adjacent lot for ownership purposes. The buffer strip shall be the property owners’ responsibility to maintain. Care shall be taken to alleviate sight obstruction at intersections and driveways. Unless specifically approved otherwise, the strip shall be designated on the plat generally as follows: “This strip is reserved for screening. The placement of any structure hereon is prohibited.”

8. The public works director may grant an exception to the requirements of this subsection only if it finds that complying with these requirements would result in a neighborhood street functioning as a collector arterial.

1. Permanent dead-end streets shall terminate with a turning circle, and shall meet the following minimum standards:

2. Where property adjacent to a subdivision is undeveloped and where the public works director determines it is desirable to allow for future continuation of a street into the adjacent property, the right-of-way shall extend to the subdivision boundary and an interim turning circle shall be provided. The radius of such turning circle shall conform to subsections (C)(1)(b) and (C)(1)(c) of this section. The final plat may contain a notation that land outside the normal street right-of-way within the turning circle shall revert to abutting property owners whenever the street is continued through to city standards; provided, that all public improvements within the turning circle have been properly relocated.