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Various methods of assessing noise, loudness, and noise annoyance are reviewed and explained; sources, types, and intensities of traffic noise are noted; typical means of abatement and attenuation are described; design criteria for various land uses ranging from low-density to industrial are suggested and compared with the results of previous BBN and British systems for predicting annoyance and complaint; and a design guide for predicting traffic noise, capable of being programmed for batch and on-line computer applications, is presented in form suitable for use as a working tool. A flow diagram describes the interrelationships of elements in the traffic noise prediction methodology, and each element is discussed in detail in the text. The text is presented of a tape recording that takes the listener through a series of traffic situations, with such variables as traffic distance, flow velocity, distance, outdoors and indoors, and presence or absence of absorbers and attenuators.
Roadside development was investigated from all facets. A history of efforts to guide the practical applications of roadside development to America's rapidly growing highway system is summarized. The primary premise that highway location and design must be attractive as well as utilitarian has been expanded to include the right of way land, scenic areas, and land adjacent to the highway. Conservation of natural resources in highway design and construction is emphasized. Erosion control, landscape plantings, roadside rest areas, scenic turnouts and overlooks are discussed in terms of planning, design, and materials. Safety, maintenance, and future aspects of roadside development are also considered. legal authority and techniques for development are appended.