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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>Transport Research International Documentation (TRID)</title>
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      <title>Ultrafine particle air pollution inside diesel-propelled passenger trains</title>
      <link>https://trid.trb.org/View/1534175</link>
      <description><![CDATA[Locomotives with diesel engines are used worldwide and are an important source of air pollution. Pollutant emissions by locomotive engines affect the air quality inside passenger trains. This study is aimed at investigating ultrafine particle (UFP) air pollution inside passenger trains and providing a basis for assessing passenger exposure to this pollutant.The concentrations of UFPs inside the carriages of push-pull trains are dramatically higher when the train operates in pull mode. This clearly shows that locomotive engine emissions are a dominant factor in train passengers' exposure to UFPs. The highest levels of UFP air pollution are observed inside the carriages of pull trains close to the locomotive. In push mode, the UFP number concentrations were lower by factors of 2.6–43 (depending on the carriage type) compared to pull mode. The UFP concentrations are substantially lower in diesel multiple-unit trains than in trains operating in pull mode. A significant influence of the train movement regime on the UFP NC inside a carriage is observed.]]></description>
      <pubDate>Mon, 17 Sep 2018 10:32:14 GMT</pubDate>
      <guid>https://trid.trb.org/View/1534175</guid>
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      <title>Indoor and outdoor measurement of airborne particulates on a commuter train running partly in tunnels</title>
      <link>https://trid.trb.org/View/1497675</link>
      <description><![CDATA[Wear processes from mechanical braking, rail/wheel contact, the railway electrification system and re-suspended materials due to the turbulence of passing trains in tunnels and stations have been suggested to be the main contributors to particulate matter levels inside trains. In this study, onboard monitoring was performed on a commuter train stopping at underground and aboveground stations. The concentration and size distribution of particulates were monitored for both indoor and outdoor levels. The results show that the levels of PM10 and PM2.5 inside the train were about one-fifth of the outdoor levels. Significant increases in indoor particulate number concentrations were observed in tunnel environments and there was a slight increase when the doors were open. Differences in the size distributions of micro- and nano-sized particulates could be identified for different tunnels.]]></description>
      <pubDate>Mon, 22 Jan 2018 10:48:16 GMT</pubDate>
      <guid>https://trid.trb.org/View/1497675</guid>
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      <title>Groups study clean cabin air</title>
      <link>https://trid.trb.org/View/1094397</link>
      <description><![CDATA[]]></description>
      <pubDate>Wed, 02 Mar 2011 11:00:28 GMT</pubDate>
      <guid>https://trid.trb.org/View/1094397</guid>
    </item>
    <item>
      <title>Mystery illness</title>
      <link>https://trid.trb.org/View/981712</link>
      <description><![CDATA[Subtitle: Investigators can't determine why five crewmembers and a number of passengers on an A319 became ill.]]></description>
      <pubDate>Fri, 29 Oct 2010 15:02:33 GMT</pubDate>
      <guid>https://trid.trb.org/View/981712</guid>
    </item>
    <item>
      <title>Toxic air : cabin air quality could have deadly results</title>
      <link>https://trid.trb.org/View/872087</link>
      <description><![CDATA[]]></description>
      <pubDate>Wed, 08 Oct 2008 08:00:40 GMT</pubDate>
      <guid>https://trid.trb.org/View/872087</guid>
    </item>
    <item>
      <title>Contaminated air : time to act?</title>
      <link>https://trid.trb.org/View/867190</link>
      <description><![CDATA[]]></description>
      <pubDate>Thu, 07 Aug 2008 14:32:31 GMT</pubDate>
      <guid>https://trid.trb.org/View/867190</guid>
    </item>
    <item>
      <title>Toxic shocker</title>
      <link>https://trid.trb.org/View/866705</link>
      <description><![CDATA[Subtitle: Just how harmful are fumes in aircraft cabins? Mounting evidence suggests contaminants can threaten safety and cause chronic illness, yet many deny there is a problem.]]></description>
      <pubDate>Thu, 07 Aug 2008 13:38:01 GMT</pubDate>
      <guid>https://trid.trb.org/View/866705</guid>
    </item>
    <item>
      <title>Airliner cabin air quality exposure assessment</title>
      <link>https://trid.trb.org/View/854776</link>
      <description><![CDATA[]]></description>
      <pubDate>Thu, 24 Apr 2008 20:29:05 GMT</pubDate>
      <guid>https://trid.trb.org/View/854776</guid>
    </item>
    <item>
      <title>Airing it out</title>
      <link>https://trid.trb.org/View/845419</link>
      <description><![CDATA[Subtitle: Studies have found no link between cabin air quality and health problems, but some crewmembers and passengers say those studies are wrong.]]></description>
      <pubDate>Mon, 28 Jan 2008 10:10:10 GMT</pubDate>
      <guid>https://trid.trb.org/View/845419</guid>
    </item>
    <item>
      <title>ENCLOSED EXHAUST FUMES.</title>
      <link>https://trid.trb.org/View/624190</link>
      <description><![CDATA[No abstract provided.]]></description>
      <pubDate>Tue, 04 Feb 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/624190</guid>
    </item>
    <item>
      <title>COMMENTS FROM THE NATIONAL INSTITUTE FOR OCCUPATIONAL SAFETY AND HEALTH ON THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION REOPENING OF THE PROPOSED RULE ON EXPLOSIVE AND OTHER DANGEROUS ATMOSPHERES IN VESSELS AND VESSEL SECTIONS.</title>
      <link>https://trid.trb.org/View/522115</link>
      <description><![CDATA[No abstract provided.]]></description>
      <pubDate>Tue, 17 Oct 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/522115</guid>
    </item>
    <item>
      <title>A STUDY OF SMOKE MOVEMENT IN AN AIRCRAFT FUSELAGE</title>
      <link>https://trid.trb.org/View/82957</link>
      <description><![CDATA[The migration of smoke from in-flight fires and possible measures to improve its removal have been studied in ground tests on a Comet 4B. Under normal conditions, smoke generated in various sections in the fuselage followed the air flow and dispersed throughout the fuselage before passing overboard. Biasing discharge to the front or rear affected smoke clearance only slightly but directing the total air supply to the compartment in which the smoke was generated had a beneficial effect locally, at the expense of adjacent cabins. Better clearance might be obtained in a more modern aircraft. Tests in the flight deck showed that, in smoke laden conditions, flight instruments were best viewed with individual illumination in low ambient light. Further work with higher smoke densities is recommended. (Author)]]></description>
      <pubDate>Wed, 11 Jul 1979 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/82957</guid>
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    <item>
      <title>CARBON MONOXIDE AS AN INDICATOR OF CIGARETTE-CAUSED POLLUTION LEVELS IN INTERCITY BUSES</title>
      <link>https://trid.trb.org/View/10564</link>
      <description><![CDATA[In response to increasing public concern about the safety and comfort effects of smoking on intercity buses the Bureau of Motor Carrier Safety conducted tests which were designed to achieve 'worst-case' and 'realistic' carbon monoxide (CO) levels on an intercity bus. It was hypothesized that CO levels would give an indication of the health effect of smoke levels. Under simulated 'worst-case' conditions, which are unlikely to be duplicated in actual service, CO levels were substantially below standards set by the Occupational Safety and Health Administration. However, in the 'worst-case' test four of the six experiment subjects agreed that the smoke level was irritating. In the 'realistic' test, the CO level was 5 ppm above ambient and the accompanying smoke level was not considered to be disturbing. (Author)]]></description>
      <pubDate>Thu, 31 Jan 1974 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/10564</guid>
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