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Functional Design Vertical Horizontal <br /> Class Speed Control Control <br /> (mph) Maximum Minimum <br /> Gradient Radius <br /> (percent) (feet) <br /> Private street 30 12 275 <br /> (residential) <br /> . . � <br /> Public street 30 10 275 <br /> (residential) <br /> Public street 40 8 • 400 <br /> (commercial and <br /> industrial) <br /> (Code 1984,§11.33) <br /> Sec.82-282.-Off-site premises;roadways. <br /> (a) Access to improved public or private roadways. No subdivision shall be approved unless the area to be subdivided shall have adequate <br /> access from an existing publicly dedicated and opened roadway or on a private roadway open to travel or vehicular use pursuant to an <br /> easement between persons or between persons and the city.Such roadway must be suitably improved as required by the city,the state or <br /> the county. If the public roadway, including but not limited to existing bridges, drainage structures, lighting, shoulders, base, pavement, <br /> alignment or sight distance, is not suitable to handle the proposed additional vehicular traffic from the subdivision,the subdivider at his <br /> expense will be responsible for first improving the public roadway to a standard acceptable to the city,to ensure that the health,safety and <br /> welfare of the citizens presently using the roadway and in the future will be protected and will not be adversely affected by the increased <br /> use of the roadway caused by the subdivision.This improvement shall be accomplished prior to final subdivision approval unless the city <br /> agrees and the subdivider provides a suitable performance bond to complete the improvements in the subdivider's agreement. <br /> (b) Access to improved public roadways over existing private roadways. Wherever the area to be subdivided is to utilize an existing private <br /> roadway in order to gain access to the public roadway,such private roadway shall be suitably improved as provided in this section for public <br /> roadways. <br /> (Code 1984,§11.32(1)) <br /> Sec.82-283.-On-site roadways. <br /> (a) Grading and improvement plan. Roadways shail be graded and improved to conform to the city's construction standards and specifications <br /> and shall be approved as to design and specifications by the city engineer, in accordance with the construction plans required to be <br /> submitted prior to final subdivision approval. <br /> (b) Topography and nrrangement. <br /> (1) Roadways shall be related appropriately to the topography. Roadways shall be curved wherever possible to avoid conformity of lot <br /> appearance. All roadways shall be arranged so as to obtain as many as possibfe of the building sites at or above the grades of the <br /> street. Grades of streets shall conform as closely as possible to the original topography.A combination of steep grades and curves <br /> shall be avoided. <br /> (2) All streets shall be properly integrated with the existing and proposed system of thoroughfares and dedicated rights-of-way as <br /> established in the comprehensive municipal plan. . <br /> (3) All thoroughfares shall be properly related to specific traffic generators,such as industries, business districts,schools,churches,and <br /> shopping centers;to population densities;and to the pattern of existing and proposed land uses. <br /> (4) Roadways shall be laid out to conform as much as possible to the topography,to discourage use by through traffic,to permit efficient <br /> drainage and utility systems, and to require the minimum number of roadways necessary to provide convenient and safe access to <br /> property. <br /> (5) The gridiron roadway pattern need not necessarily be adhered to,and the use of curvilinear roadways or U-shaped roadways shall be <br /> encouraged where such use will result in a more desirable layout. <br /> Page 7 <br />