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d. No more than two residences may•rved by a driveway located within an access outl• e. No access outlot may be platted abutting an adjacent outlot except when the intent is to combine the two access outlots for creation of a public or private road meeting city standards. (5) Screening requirements and accessory structure standards.Front/back lot subdivisions shall be designed in a manner such that the screening requirements and accessory structure standards of section 78-1370 can be met. (6) Effective date.The requirements and standards of this section shall apply only to those front/back lot divisions which received preliminary plat approval after January 1, 1994. (Code 1984,§11.31(5);Ord.No.122 2nd series,§3, 12-13-1993;Ord.No.64 3rd series,§2,9-14-2009) DIVISION 3.-ROADS AND PUBLIC WAYS Sec.82-281.-Design standards. (a) Generally. In order to provide for roads of suitable location, width and improvement to accommodate prospective traffic and afford satisfactory access to police, firefighting, snow removal, sanitation and road maintenance equipment, and to coordinate roads so as to compose a convenient system and avoid undue hardships to adjoining properties,the following design standards for roads are required: (1) Road surfacing and improvements. After the sewer and water utilities have been installed by the subdivider, the subdivider shall construct all road pavement,shoulders,drainage improvements and structures,curbs,culs-de-sac,and sidewalks in conformance with all construction standards and specifications adopted by the city and shall be incorporated into the construction plans required to be submitted to the subdivider for final subdivision approval. (2) Rights-of-way. Rights-of-way shall be in accordance with the following performance standard: a. Minimum right-of-way widths. Principal arterial,intermediate arterial As recommended by the State Department of Transportation Minor arterial 80 feet Collector 70 feet ,Local 50 feet Parkway 100 feet Culs-de-sac 50 feet radius b. Rights-of-way are needed for future roadways in the opinion of the city. c. Right-of-way widths or additional widths in existing rights-of-way in excess of the standards designated in this chapter when, due to topography,additional width is necessary to provide adequate earth slopes.Such slopes shall not be in excess of 3:1. (b) Railroads and limited-access roadways. Railroad rights-of-way and limited-access roadways where so located as to affect the subdivision of adjoining lands shall be treated as follows: (1) In residential districts,a buffer strip at least 25 feet in depth in addition to the normal depth of the lot required in the district shall be provided adjacent to the railroad right-of-way or limited-access roadway. (2) In districts zoned for business, commercial or industrial uses, the nearest street extending parallel or approximately parallel to the railroad shall be at a sufficient distance to ensure suitable depth for commercial or industrial sites. Page 18