<rss version="2.0" xmlns:atom="https://www.w3.org/2005/Atom">
  <channel>
    <title>Transport Research International Documentation (TRID)</title>
    <link>https://trid.trb.org/</link>
    <atom:link href="https://trid.trb.org/Record/RSS?s=PHNlYXJjaD48cGFyYW1zPjxwYXJhbSBuYW1lPSJzdWJqZWN0bG9naWMiIHZhbHVlPSJvciIgLz48cGFyYW0gbmFtZT0idGVybXNsb2dpYyIgdmFsdWU9Im9yIiAvPjxwYXJhbSBuYW1lPSJsb2NhdGlvbiIgdmFsdWU9IjAiIC8+PC9wYXJhbXM+PGZpbHRlcnM+PGZpbHRlciBmaWVsZD0ia2V5d29yZHMiIHZhbHVlPSImcXVvdDtkZXZlbG9wbWVudCZxdW90OyBhbmQgJnF1b3Q7dGVjaG5pcXVlcyZxdW90OyBhbmQgJnF1b3Q7bWVhc3VyZSZxdW90OyBhbmQgJnF1b3Q7dmVoaWNsZSZxdW90OyBhbmQgJnF1b3Q7c3ByYXkmcXVvdDsgYW5kICZxdW90O3dldCZxdW90OyBhbmQgJnF1b3Q7cm9hZHMmcXVvdDsiIG9yaWdpbmFsX3ZhbHVlPSJUaGUgZGV2ZWxvcG1lbnQgb2YgdGVjaG5pcXVlcyB0byBtZWFzdXJlIHZlaGljbGUgc3ByYXkgb24gd2V0IHJvYWRzIiAvPjwvZmlsdGVycz48cmFuZ2VzIC8+PHNvcnRzPjxzb3J0IGZpZWxkPSJwdWJsaXNoZWQiIG9yZGVyPSJkZXNjIiAvPjwvc29ydHM+PHBlcnNpc3RzPjxwZXJzaXN0IG5hbWU9InJhbmdldHlwZSIgdmFsdWU9InB1Ymxpc2hlZGRhdGUiIC8+PC9wZXJzaXN0cz48L3NlYXJjaD4=" rel="self" type="application/rss+xml" />
    <description></description>
    <language>en-us</language>
    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
    <docs>http://blogs.law.harvard.edu/tech/rss</docs>
    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
    <image>
      <title>Transport Research International Documentation (TRID)</title>
      <url>https://trid.trb.org/Images/PageHeader-wTitle.jpg</url>
      <link>https://trid.trb.org/</link>
    </image>
    <item>
      <title>MEASUREMENTS AND CONTROL OF TRUCK SPRAY ON WET ROADS</title>
      <link>https://trid.trb.org/View/61262</link>
      <description><![CDATA[The problem of the truck spray on wet roads is one that has often been taken up in recent years as obstructing the visibility of the following vehicles and of the road environment.  Several measurements were tried to develop an effective method for measuring the truck spray; this led to the development of a technique which has proved most practical and capable of indicating the extent of a spray in terms of handy weight values per unit area.  Measurements have been made of (1) the wiper frequency; (2) visual clarity of the preceding vehicle from the following vehicle; (3) photographs of the preceding vehicle, each of which directly indicates the visual obscuration rate, and studied relation between the weight measurement of spray and the visual obscuration rate.  It is also pointed out that the spray problem would not occur even with a van truck, which causes the heaviest spray among all types of vehicles now in use, if the following driver is careful enough to maintain a safety interval between his vehicle and the preceding vehicle. Finally, details are given of a new spray protector which, though still in an experimental stage, has succeeded in reducing the volume of the spray by a van truck to one tenth of the current level.  /TRRL/]]></description>
      <pubDate>Fri, 13 Jan 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/61262</guid>
    </item>
  </channel>
</rss>