PROGRESS REPORT ON NOISE ABATEMENT: 1961
HEDGES AND TREES PROPERLY LOCATED ALONG TRAFFIC ARTERIES NOT ONLY CAN HAVE A HIGHLY AESTHETIC VALUE AND SERVE AS PURIFIERS OF THE AIR AND AS TRAPS FOR DUST AND EXHAUST FUMES, BUT THEY CAN ALSO EFFECTIVELY DEADEN THE NOISE OF TRAFFIC. THIS HAS BEEN PROVED BY EXTENSIVE TESTS CARRIED OUT BY THE ACOUSTICAL LABORATORY OF THE MEDICAL ACADEMY IN DUSSELDORF, GERMANY, IN COLLABORATION WITH LOCAL ASSOCIATIONS FOR NATURE CONSERVATION AND THE COMBATING OF NOISE. PUBLISHED REPORTS ON THESE INVESTIGATIONS INDICATE THAT THE FOLLOWING PROVISIONS ARE STEPS IN THE RIGHT DIRECTION: (1) PLANNING OF THROUGHWAYS SO THAT THE ROAD SURFACE IS SLIGHTLY BELOW THE SURFACE OF SURROUNDING TERRITORY, TOGETHER WITH PROVISION OF PLANTED ROADSIDE SLOPES TO ABSORB SOUND AND DEFLECT IT UPWARD. (2) WHERE SUCH MAJOR ROADS PASS THROUGH WOODED AREAS, PROVISION OF BREAKS THROUGH THE TREES PARALEL TO THE FLOW OF TRAFFIC. (3) PROVISION OF STAGGERED ROWS OF GRASS STRIPS, HEDGES, AND TREES ALONG THE HIGHWAY. IT WAS FOUND THAT ALTERNATING ROWS OF CONIFERS AND BROADLEAF TREES WAS ESPECIALLY EFFECTIVE IN DISPERSING AND ABSORBING SOUND WAVES IN THE FREQUENCY RANGE PRODUCED BY MIXED VEHICULAR TRAFFIC. FOURTEEN RECENT PUBLICATIONS RELATING TO ROAD NOISE ARE CITED ALONG WITH BRIEF ANNOTATIONS.
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Supplemental Notes:
- No 928, pp 2-4, 14 REF. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
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Corporate Authors:
Reports
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Authors:
- Simonson, W H
- Publication Date: 1961
Media Info
- Media Type: Digital/other
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Serial:
- Highway Research Board Roadside Development Committee Reports
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Bibliographies; Roadside; Screenings; Traffic noise
- Subject Areas: Design; Environment; Highways;
Filing Info
- Accession Number: 00205128
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Nov 29 1971 12:00AM