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Subject Manuals (Latest Edition <br />Pavement Guide for Design of Pavement Structures <br />AASHTO <br />Traffic Manual on Uniform Traffic Control <br />Control Devices, FHWA <br />Traffic Chapter 952 (Traffic), Indian River <br />(General) County Land Development Regulations <br />(B) Compliance with Chapter 952, Traffic Standards. All <br />subdivisions shall comply with the standards set forth <br />in Chapter 952 (Traffic). <br />1. Minimum street and rights-of-way widths. The <br />minimum street and rights-of-way widths shall be as <br />stated in Chapter 952, Traffic. The board of <br />county commissioners may require the increase of <br />right-of-way and pavement widths if it finds that <br />the modification in width is consistent with the <br />projected traffic needs and good engineering <br />practice. No variance will be granted on minimum <br />right-of-way widths for public streets. Right-of- <br />way widths for one-way streets may be reduced from <br />the above standards as approved by the public works <br />director. <br />(C) Relation to existing streets. <br />1. Adjoining areas. The pattern of streets in new <br />subdivisions shall provide for the continuation of <br />existing streets from adjoining areas, or for their <br />proper projection where adjoining land is not <br />subdivided. <br />2. Adjacent areas. Where street extensions into <br />adjacent undeveloped land are necessary to ensure <br />a coordinated street system, or to provide adequate <br />access and circulation for future development, <br />provisions for such future street or streets shall <br />be made. <br />3. Extensions to existing roadways. Extensions of <br />existing public roads may be required to provide <br />adequate access and circulation, and/or to mitigate <br />against the negative impacts of developments having <br />lengthy dead -ended streets or closed street <br />systems. Failure to provide adequate extensions <br />may result in a reduction (to a density as low as <br />one unit per acre) in the number of lots served by <br />long dead -ended street systems. <br />4. Emergency Access. The Planning and Zoning <br />Commission may require one or more emergency <br />accessways; with corresponding easements, <br />construction, and maintenance provisions, where it <br />317 <br />