(a) Generally. Streets, whether dedicated to the public use or privately owned, must be designed in accordance with the Street Design Manual of the city of Dallas. The geometrics of streets must be designed to provide appropriate access for passenger, delivery, emergency, and maintenance vehicles.
(b) Street construction required.
(1) Within the boundaries of the proposed plat, the owner must construct all thoroughfares, minor streets, and alleys shown on the proposed plat.
(2) When a minor street is along the perimeter of the proposed plat and the street is not improved with an approved all weather paving material to a width of 20 feet, the owner must improve the street to that standard along the length of the proposed plat.
(3) When a thoroughfare is along the perimeter of the proposed plat for 1000 feet or more, the owner must construct thoroughfare, sidewalk, and storm drainage improvements to complete one-half of the thoroughfare requirements along the entire length of the plat, adjusted for any participation in the construction under Section 51A-8.614.
(c) Minor street criteria. If additional right-of-way for a minor street has been waived by the commission in accordance with Section 51A-8.602 (c)(3), the amount of street construction required for the streets on which the requirements have been waived is determined by the director of development services. Additional street construction may be required, if necessary, based on the existing condition or width of the streets, and if warranted by the expected traffic volumes, property access requirements, or truck, bus, and taxi loading. If additional right-of-way has not been waived, minor streets must be designed and constructed to meet criteria given in the Street Design Manual of the city of Dallas.
(d) Private streets criteria. When permitted, private streets are governed by the following regulations:
(1) Private streets must be constructed and maintained to the standards for public rights-of-way and must be approved by the director and the chief planning officer. Sidewalks are required and must be constructed and maintained to the standards for sidewalks in the public right-of-way. Water and wastewater mains must be installed in accordance with the applicable ordinances.
(2) A legal entity must be created that is responsible for street lighting, street maintenance and cleaning, and the installation and maintenance of interior traffic control devices. The legal instruments establishing the responsibility for a private street or alley must be submitted to the commission for approval, be approved as to legal form by the city attorney, and be recorded in the appropriate county. A provision must be included in the legal instruments that addresses the consequences of failure to maintain the private street or alley and its appurtenances, including the right, but not the obligation, of the city to take any action needed to bring the private street or alley into compliance.
(3) Private streets must contain private service easements including, but not limited to the following easements: utilities; storm drainage; fire lane; street lighting; government vehicle access; mail collection and delivery access; and utility meter reading access.
(4) Street lights comparable with those required on public rights-of-way must be provided. Street lighting design plans must be approved by the director based upon applicable guidelines.
(5) Design plans and location of all traffic control devices must be approved by the traffic engineer. The design, size, color, and construction of all traffic control devices must comply with the requirements for those located in public rights-of-way.
(6) The fire protection standards in Article XIII of the Dallas Fire Code must be followed.
(7) A public school, park, or other public facility must be accessible from public rights-of-way in accordance with this code.
(8) Private streets must comply with the thoroughfare plan and must not interrupt public through streets.
(9) Private street names and numbers must be approved by the commission.
(10) At all entrances to subdivisions with private streets, signs identifying the streets as private must be posted. Private street signs must be:
(i) black on a yellow background;
(ii) diamond-shaped;
(iii) a minimum of 24 by 24 inches; and
(iv) installed pursuant to city traffic standards.
(11) Private streets and the area they serve must be platted.
(12) A guard house may be constructed at any entrance to a private street. All guard houses must be at least 30 feet from a public right-of-way.
(13) Any structure that restricts access to a private street must provide a passageway 20 feet wide and 14 feet high.
(14) One private street entrance must remain open at all times. If an additional private street entrance is closed at any time, it must be constructed to permit opening of the passageway in emergencies by boltcutters or breakaway panels.
(15) A private street system serving an area containing over 150 dwelling units must have a minimum of two access points to a public street.
(16) A private street system may serve no more than 300 dwelling units.