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    <title>Transport Research International Documentation (TRID)</title>
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    <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>
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      <link>https://trid.trb.org/</link>
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    <item>
      <title>CENTRAL TIMER UNIT</title>
      <link>https://trid.trb.org/View/189414</link>
      <description><![CDATA[The number of car services which require a controlled time function is increasing progressively day by day, reaching the point in which it is economic to raise the question of eliminating the various units which are placed dispersedly in the vehicle and substitute them with an intelligent central unit to control these functions.  This report describes a control unit of this type which carries out the following functions: Flasher unit; Hazard signal light; Rear window heating timer; Courtesy lights timer; Slow windscreen wiper-washer; Fast windscreen wiper-washer; Pulse wipe timer of windscreen wiper-washer; Windscreen wiper-washer timer; Pulse wipe timer of rear window wiper-washer; Slow rear window wiper-washer; Rear window wiper-washer timer; Detection of stop lights failure; Lights left on detection switch; and Engine parameters detection.  The advantages of this type of system, apart from the economic point of view, are in the simplification of the wire harnessing and the reliability of the assembly due to the corresponding reduction of the components implied in the system.]]></description>
      <pubDate>Thu, 30 Jun 1983 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/189414</guid>
    </item>
    <item>
      <title>ELECTRICALLY HEATED WINDSHIELD AND BACKLITE SYSTEM</title>
      <link>https://trid.trb.org/View/136373</link>
      <description><![CDATA[A new quick-defrost system for automotive use has been developed as an option for the 1974 T-Bird and Mark IV carlines. It can defrost the heated area of the windshield and backlite within 3.5-5 minutes under standard test conditions at 0 degree F. The system evolved from aircraft defrost applications. A summary of the development work required in power sources, power levels, product and process requirements, and quality standards is presented.]]></description>
      <pubDate>Thu, 09 Jan 1975 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/136373</guid>
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      <title>DEFROSTING OF AUTOMOBILE WINDSHIELDS USING HIGH LIGHT TRANSMITTING ELECTROCONDUCTING FILMS</title>
      <link>https://trid.trb.org/View/136374</link>
      <description><![CDATA[The development of a new high light transmitting electroconducting film for defrosting of car windshields is described. The film, called Hyviz, is deposited on glass by vacuum sputtering and consists of a complex of indium oxide and tin metal. This paper considers the electrical design of windshields, having films with electrical resistance and supply voltages between 30 and 80 v. Data are given on defrosting with a Hyviz windshield at power levels between 0.3 and 1.0 W/inches squared (approximately 50-150 W/feet squared showing a defrosting time of about 5 min from 0 degree F for the higher power level.]]></description>
      <pubDate>Thu, 09 Jan 1975 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/136374</guid>
    </item>
    <item>
      <title>DEVELOPMENT OF THE SIERRACIN ELECTRICITY HEATABLE SAFETY GLASS INTERLAYER</title>
      <link>https://trid.trb.org/View/136376</link>
      <description><![CDATA[A new concept for providing electrically heatable automotive safety glass for rapid, silent removal of ice and fog condensation has been developed, based upon continuous deposition of a transparent conductive coating on plastic substrates. This concept is embodied in an electrically heatable interlayer.  The technical foundations and antecedents of this product are discussed. The major components of the interlayer are described, and the use of the interlayer in subsequent lamination is illustrated, as well as special design features of the interlayer particular to its use in current production automobile windshields and backlites.]]></description>
      <pubDate>Thu, 09 Jan 1975 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/136376</guid>
    </item>
    <item>
      <title>ADSYM: A FORTRAN MODEL OF AN AUTOMOBILE DEFOG/DEFROST SYSTEM</title>
      <link>https://trid.trb.org/View/112341</link>
      <description><![CDATA[THE REPORT DESCRIBES THE BASIS AND USE OF THE FORTRAN 4 PROGRAM ADSYM (AUBOMOBILE DEFOG/DEFROST SYSTEM MODEL). THE SCOPE AND LIMITATIONS OF THE MODEL AND THE USE OF THE PROGRAM ARE ILLUSTRATED BY EXAMPLES. POSSIBILITIES FOR FUTURE DEVELOPMENT ARE BRIEFLY DISCUSSED. A COMPLETE LISTING OF THE PROGRAM IS GIVEN IN AN APPENDIX. /AUTHOR/]]></description>
      <pubDate>Wed, 15 Aug 1973 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/112341</guid>
    </item>
    <item>
      <title>ADSYM A FORTRAN MODEL OF AN AUTOMOBILE DEFOG/DEFROST SYSTEM</title>
      <link>https://trid.trb.org/View/112292</link>
      <description><![CDATA[BASIS AND USE OF THE FORTRAN 4 PROGRAM ADSYM (AUTOMOBILE DEFOG/DEFROST SYSTEM MDOEL) ARE DESCRIBED. THE SCOPE AND LIMITATIONS OF THE MODEL AND THE USE OF THE PROGRAM ARE ILLUSTRATED BY EXAMPLES. POSSIBILITIES FOR FUTURE DEVELOPMENT ARE BRIEFLY DISCUSSED. A COMPLETE LISTING OF THE PROGRAM IS GIVEN IN AN APPENDIX. /AUTHOR/]]></description>
      <pubDate>Tue, 24 Jul 1973 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/112292</guid>
    </item>
    <item>
      <title>WAX METHOD OF DETERMINING WINDSHIELD DEFROSTER PERFORMANCE</title>
      <link>https://trid.trb.org/View/111870</link>
      <description><![CDATA[THIS PAPER DESCRIBES A PROCEDURE FOR DETERMINING DEFROSTER PERFORMANCE USING WAX. THE APPROACH IS A USEFUL TOOL FOR ESTABLISHING BREAKTHROUGH POINTS, AND DEVELOPING BALANCED DEFROSTER AIR DISTRIBUTION PATTERNS PRIOR TO COLD ROOM TESTING. SINCE IT CAN BE CONDUCTED AT ROOM TEMPERATURE, THE WAX METHOD IS CONSIDERABLY MORE CONVENIENT AND CAN BE EXECUTED WITH GREATER FREQUENCY THAN IN A COLD ROOM. ALTHOUGH THE WAX PROCEDURE IS A GOOD BAROMETER OF THE RELATIVE EFFECTIVENESS OF DIFFERENT DEFROSTER SYSTEMS, AND DOES PROVIDE VALUABLE PRELIMINARY STUDIES, IT DOES NOT DUPLICATE COLD ROOM CONDITIONS. THE TEST METHOD DESCRIBED, THEREFORE, IS NOT A SUBSTITUTE FOR, NOR CAN IT BE USED IN PLACE OF, ACTUAL COLD ROOM TESTING. THE PAPER PROVIDES INFORMATION ON THE TEST FACILITY, TEST EQUIPMENT, TEST PREPARATION, WAX MIXTURE AND APPLICATION, AND CONDUCTING THE TEST.]]></description>
      <pubDate>Tue, 15 May 1973 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/111870</guid>
    </item>
    <item>
      <title>GEOMETRIC VISION REQUIREMENTS IN THE DRIVING TASK</title>
      <link>https://trid.trb.org/View/109243</link>
      <description><![CDATA[AN ANALYSIS IS MADE OF THE DRIVER'S FORWARD VISION REQUIREMENTS. VARIOUS METHODS FOR RELATING VEHICLE GEOMETRY TO THESE VISION REQUIREMENTS ARE EXAMINED. SEVERAL OF THESE METHODS WERE FOUND TO HAVE SOME POTENTIAL AS DESIGN TOOLS TO ASSIST AUTOMOTIVE ENGINEERS IN PLACING REAR VISION SYSTEMS, DETERMINING THE PROPER SIZE AND SHAPE FOR VEHICLE DAY-LIGHT OPENINGS, AND TO PROVIDE A MEANS FOR EVALUATING WINDSHIELD WIPING AND DEFROSTING PATTERNS. IN THIS STUDY, THE RELATIVE IMPORTANCE OF VARIOUS VISION ZONES IS BASED ON PUBLISHED VISION PERFORMANCE AND TRAFFIC INFORMATION. /AUTHOR/]]></description>
      <pubDate>Wed, 18 Nov 1970 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/109243</guid>
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