Download or read book Atmospheric Effects Associated with Highway Noise Propagation written by and published by . This book was released on 2005 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary questions investigated in this project were: What are the atmospheric conditions in the Phoenix valley that contribute to higher than normal sound levels? Are the conditions unique to the Phoenix valley? Can the atmospheric effects be anticipated? The main components of the project were: (1) a review of literature relevant to sound propagation, (2) detailed noise measurements in a Scottsdale neighborhood along the East Loop 101 Freeway, (3) computer modeling of sound propagation under various measured and inferred atmospheric conditions, (4) noise measurements before and after installation of an asphalt rubber friction course (ARFC) on the Pima Freeway by the ADOT Quiet Pavement Pilot Program, and (5) a pilot study investigating parametric models of tire/pavement noise. Some key conclusions are: nighttime thermal inversion conditions that are common in the Phoenix valley from October through March cause sound level increases of 5 to 8 dB at distances greater than 1/4 mile from freeways, nighttime down-slope drainage flows off the mountain ranges surrounding the Phoenix valley cause localized focusing and de-focusing of sound levels, sound level variations under inversion conditions appear to be greatest at locations that are upwind relative to the down-slope flows, the highest sound levels during the October to March period will usually occur right around sunrise when high traffic volumes coincide with strong inversion conditions, and installation of the ARFC reduces sound levels by 8 to 10 dBA both close to the roadway and at distances of 1/4 mile and greater. A final tentative conclusion is that, based on the computer modeling, there may be a rapid onset of refraction effects between about 200 and 300 m (650 to 1000 ft) from Phoenix valley roadways,
Download or read book Springer Handbook of Acoustics written by Thomas Rossing and published by Springer Science & Business Media. This book was released on 2007-06-21 with total page 1179 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an unparalleled modern handbook reflecting the richly interdisciplinary nature of acoustics edited by an acknowledged master in the field. The handbook reviews the most important areas of the subject, with emphasis on current research. The authors of the various chapters are all experts in their fields. Each chapter is richly illustrated with figures and tables. The latest research and applications are incorporated throughout, including computer recognition and synthesis of speech, physiological acoustics, diagnostic imaging and therapeutic applications and acoustical oceanography. An accompanying CD-ROM contains audio and video files.
Download or read book Tyre Road Noise written by Ulf Sandberg and published by . This book was released on 2002 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Federally Coordinated Program of Highway Research Development and Technology written by and published by . This book was released on 1983 with total page 838 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Impacts of Road Vehicles written by R M Harrison and published by Royal Society of Chemistry. This book was released on 2017-06-16 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first concerns that come to mind in relation to pollution from road vehicles are direct emissions of carbon dioxide and toxic air pollutants. These are, of course, important but the impacts of road traffic are altogether more substantial. This volume of the Issues in Environmental Science and Technology Series takes a broader view of the effects on the environment and human health, excluding only injury due to road traffic accidents. By looking across the environmental media, air, water and soil, and taking account also of noise pollution, the volume addresses far more than the conventional atmospheric issues. More importantly, however, it examines present and future vehicle technologies, the implications of more extensive use of batteries in electric vehicles and the consequences of recycling vehicles at the end of use. Finally, examples of life-cycle analysis as applied to road vehicles are reviewed. This book is a comprehensive source of authoritative information for students studying pollution, and for policy-makers concerned with vehicle emissions and road traffic impacts more generally.
Download or read book Federally Coordinated Program of Highway Research Development and Technology Annual Progress Report Fiscal Year 1985 written by and published by . This book was released on 1986 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Department of Transportation and Related Agencies Appropriations for 2000 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations and published by . This book was released on 1999 with total page 1800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computational Atmospheric Acoustics written by E.M. Salomons and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: Noise from cars, trains, and aeroplanes can be heard at large distances from the source. Accurate predictions of the loudness of the noise require accurate computations of sound propagation in the atmosphere. This book describes models that can be used for these computations. The models take into account complex effects of the atmosphere and the ground surface on sound waves, including the effects of wind and temperature distributions, atmospheric turbulence, irregular terrain, and noise barriers. The main text of the book focuses on physical effects in atmospheric acoustics. The effects are illustrated by many numerical examples. The main text requires a very limited mathematical background from the reader; detailed mathematical descriptions of the models, developed from the basic principles of acoustics, are presented in appendices. Models for moving media are compared with models that are based on the effective sound speed approach. Both two-dimensional models and three-dimensional models are presented. As meteorological effects play an important role in atmospheric acoustics, selected topics from boundary layer meteorology and the theory of turbulence are also presented.
Download or read book Department of Transportation and Related Agencies Appropriations for 1999 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations and published by . This book was released on 1998 with total page 2014 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Calculation of Road Traffic Noise written by Great Britain. Department of Transport and published by . This book was released on 1988 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supersedes 1975 edition (ISBN 011553676)
Download or read book Department of Transportation and related agencies appropriations for fiscal year 1979 written by United States. Congress. Senate. Committee on Appropriations. Subcommittee on Transportation and Related Agencies and published by . This book was released on 1978 with total page 1470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fernan Lake Road Safety Improvement Project Koontenai County written by and published by . This book was released on 2005 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book California High speed Train System written by and published by . This book was released on 2005 with total page 1466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enhanced Evaluation of Cumulative Effects Associated with Permitting Activity for Large scale Development in Coastal Mississippi written by and published by . This book was released on 2005 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Noise Barriers written by Benz Kotzen and published by CRC Press. This book was released on 2009-04-23 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental Noise Barriers is a unique one-stop reference for practitioners, whether acoustical engineers, landscape architects, or manufacturers, and for highways departments in local and central authorities. This extensively revised new edition is updated in line with UK and EU legislation and international provision of barriers.
Download or read book Aeronautics and Space Report of the President Activities written by United States. President and published by . This book was released on 1973 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aeronautics and Space Report of the President written by United States. President and published by . This book was released on with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt:
