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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>EMPRIICAL MODEL FOR PREDICTING IN-SERVICE TRUCK TIRE NOISE LEVELS</title>
      <link>https://trid.trb.org/View/59037</link>
      <description><![CDATA[SAE Recommended Practice J57a--Sound Level of Highway Truck Tires--specifies a simple, practical noise certification test procedure for tires which results in a single-number rating--maximum A-weighted sound level--of the coastby sound level measured according to prescribed procedures.  Such a rating by itself, however, does not allow prediction of in-service noise levels.  This report discusses the basic assumptions and necessary input data for a DOT/NBS developed empirical model which utilizes the certification test results to predict in-service noise levels.  The usefulness and expected accuracy of the predictive model are shown through a comparison of measured versus predicted maximum A-weighted sound levels for a variety of truck/tire combinations.  /GMRL/]]></description>
      <pubDate>Wed, 23 Nov 1977 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/59037</guid>
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    <item>
      <title>PASSBY TIRE/PAVEMENT INTERACTION NOISE MEASUREMENT PROBLEMS</title>
      <link>https://trid.trb.org/View/59040</link>
      <description><![CDATA[This paper presents data for several tire/pavement interaction noise measurement problems present in passby tests.  Two of these, the after peak and the difference of the passby maxima with direction of travel, have not been previously reported.  The underlying causes of many of the problems are discussed.  Probable interactions with current regulatory procedures on the overall vehicle passby levels are indicated.  The need for much more precise site control is pointed out, especially with respect to atmospheric conditions which strongly affect the noise transmission path and with respect to the pavement texture.]]></description>
      <pubDate>Wed, 23 Nov 1977 00:00:00 GMT</pubDate>
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      <title>THE ENVIRONMENTAL, COMMERCIAL AND REGULATORY IMPLICATIONS OF SAE RECOMMENDED PRACTICE J37A FOR TRUCK TIRE SOUND LEVELS</title>
      <link>https://trid.trb.org/View/59042</link>
      <description><![CDATA[When traffic noise was identified in 1964 by communities as an important form of pollution, it became necessary to measure the amounts of noise present and to assign relative importances to various sources in vehicular traffic.  Truck tires were identified as being significant contributors. Engineers from the tire and truck manufacturing industries acting under the auspices of the SAE set about to develop a test procedure that satisfied the immediate need--to initiate control over truck tire noise.  This paper is a review of the outcome of that effort.  How well the method works, and how well it serves to meet the objectives now on the horizon are the preliminary topics of this discussion. The paper contains a discussion of the accumulated experience in testing tire noise and the current indications for a meaningful test procedure.  /GMRL/]]></description>
      <pubDate>Wed, 23 Nov 1977 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/59042</guid>
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    <item>
      <title>THE NOISE AND HIGHWAY TRACTION PROPERTIES OF HEAVY TRUCK TIRES</title>
      <link>https://trid.trb.org/View/59043</link>
      <description><![CDATA[This paper provides a common data base of noise and traction properties for a sample of heavy truck tires.  It provides objective information which contrasts these characteristics. It postulates that tires exhibiting improved traction performance are generally those whose tread patterns yield lower noise output.  Conversely, the tire which exhibits less desirable peak longitudinal traction properties has been bound to be noisier.  The degree of disadvantage incurred by the bias lug-rear, bias or radial rib-front configuration cannot yet be objectified within current technology.  /GMRL/]]></description>
      <pubDate>Wed, 23 Nov 1977 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/59043</guid>
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    <item>
      <title>TIRE NOISE GENERATION: THE ROLES OF TIRE AND ROAD</title>
      <link>https://trid.trb.org/View/59045</link>
      <description><![CDATA[A hemi-anechoic room and roadwheel facility, for the study of noise from small automobile tires, has been constructed at Stanford University.  Through use of the signal average, (roadwheel) tire noise may be separated into tire-rotation correlated and roadwheel-rotation correlated components which account for essentially all of the sound.  Level and spectral characteristics of these components are examined for three tires with very simple tread patterns and one commercial type tire.  The "groove pipe resonance" is discussed.  Problems in coastby-roadwheel noise measurement correlation are examined.  /GMRL/]]></description>
      <pubDate>Wed, 23 Nov 1977 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/59045</guid>
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    <item>
      <title>TIRE NOISE SCREENING</title>
      <link>https://trid.trb.org/View/59046</link>
      <description><![CDATA[An investigation is presented here as to what extent tire noise emission from road vehicles can be reduced by attaching special screens to the vehicles.  /GMRL/]]></description>
      <pubDate>Wed, 23 Nov 1977 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/59046</guid>
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