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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>
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      <title>Transport Research International Documentation (TRID)</title>
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      <title>DETECTING INCIPIENT FAILURES IN BRIDGES. FINAL REPORT</title>
      <link>https://trid.trb.org/View/369402</link>
      <description><![CDATA[A system consisting of modern electronic hardware and software technologies has been developed to perform rapid and automated inspection in order to detect an incipient failure in a major structural component of a bridge.  The hardware includes piezoelectric sensors and data collection, processing and display devices.  The techniques developed utilize methodologies of digital signal processing, linear control theory and pattern recognition, a branch of the artificial intelligence discipline. The system can be mounted inside a motor van which will function as a mobile laboratory for bridge inspection.  With appropriate training, technicians should be able to operate the system routinely.  Briefly, the procedure of inspection consists of striking a major bridge member, e.g. a girder flange, with an instrumented impulse hammer and collecting a set of signatures via a sensor, e.g. an accelerometer, previously mounted on the member.  An "intelligent" computer program will then compare the inspection signature against a set of previously collected reference signatures.  Within a few minutes the computer will flash a message and an audio warning if a crack has appeared in the member.  The system is ready for field application and it is recommended that its potential be utilized.  To enhance its capability especially to find the location of a crack, the presence of which has been detected, further research is also recommended.]]></description>
      <pubDate>Thu, 20 May 1993 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/369402</guid>
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      <title>ENGINEERING EVALUATION OF CROSSINGS PROMOTES SAFETY</title>
      <link>https://trid.trb.org/View/348858</link>
      <description><![CDATA[Conlan Engineering Company, Incorporated of Tyler, Texas has developed a mobile laboratory which uses on-site computer animation to enact real-life situations.  The system is cost-efficient and evaluates highway grade crossings and crossing accidents which can provide valuable information in litigation or negotiating settlements and can possibly be used to reduce future accidents.  The four major points used in the system are sign visibility, warning devices, speed comparisons and witness visibility.]]></description>
      <pubDate>Mon, 31 Dec 1990 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/348858</guid>
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      <title>ANTHROPOMETRIC SURVEY OF TRUCK AND BUS DRIVERS: ANTHROPOMETRY, CONTROL REACH AND CONTROL FORCE</title>
      <link>https://trid.trb.org/View/57689</link>
      <description><![CDATA[A mobile lab was constructed to collect data on static and dynamic anthropometry, reach envelope, sleep envelope and force production to steering wheel and brake-clutch pedals on 227 truck and 50 bus drivers. There were essentially no differences between truck and bus drivers on the static measures. The drivers were larger than general civilian or military populations and truck drivers measured 25 years before. For all static and dynamic measures, the mean, standard deviation, standard error, 5th, 50th, 95th percentiles, kurtosis and skewness values are presented. The 5th, 10th and 20th percentile values for front, right side, and behind the seat reach envelopes are presented. Wearing a winter jacket restricted reach by approximately 2 inches. Maximum force (torque on wheel) and sustained force (torque) at max plus 5, 10, 15 seconds are presented. Steering wheel torque is compared to torques provided during front tire blowout conditions. (Portions of this document are not fully legible)]]></description>
      <pubDate>Tue, 30 Jan 1990 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/57689</guid>
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      <title>EFFECTIVENESS OF PARALLEL NOISE BARRIERS - AN IOWA STUDY. FINAL REPORT</title>
      <link>https://trid.trb.org/View/298581</link>
      <description><![CDATA[Traffic noise monitoring using FHWA's Demonstration Projects Division Mobile Noise laboratory at free field, single wall and parallel barrier site on I-380 in Evansdale, Iowa is described.  Access to I-380 prior to its being open to traffic afforded a controlled pass-by monitoring phase involving different vehicle types.  A subsequent second phase entailed identical measurement methodology to monitor "real world" I-380 traffic noise.  Phase I data indicated increases in noise were significant under the parallel barrier conditions for light duty vehicles operating in the far lane.  Phase II results showed that the actual I-380 traffic mix largely offset the earlier observed effect, but minor increases in traffic noise under the parallel system were noted.  These differences in noise barrier system effectiveness are judged to be insignificant at this particular study location.]]></description>
      <pubDate>Sat, 30 Sep 1989 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/298581</guid>
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      <title>A MOBILE LABORATORY FOR DYNAMIC ROAD LIGHTING MEASUREMENT</title>
      <link>https://trid.trb.org/View/159421</link>
      <description><![CDATA[A mobile laboratory has been developed as part of an investigation into the relationship between road lighting and accidents.  This paper describes the data collection facilities on the vehicle and associated analysis and processing equipment at the base laboratory for the measurement of all the CIE recommended road lighting quality parameters together with illuminance and individual lantern output.  All the data acquisition is carried out while the vehicle is travelling through the installation under investigation and if necessary the variation in lighting performance can be examined in great detail.(a) (TRRL)]]></description>
      <pubDate>Mon, 27 Oct 1980 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/159421</guid>
    </item>
    <item>
      <title>MOBILE LABORATORY FOR ROADWAY LIGHTING</title>
      <link>https://trid.trb.org/View/153209</link>
      <description><![CDATA[A mobile laboratory has been developed to measure the efficiency of completed road lighting installations.  This laboratory-on-wheels makes it possible to measure, while in motion, the three main photometric quality parameters of a road lighting installation: luminance level, luminance uniformity, and the degree of glare restriction.]]></description>
      <pubDate>Tue, 22 Apr 1980 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/153209</guid>
    </item>
    <item>
      <title>MINI-COMPUTER SOFTWARE DATA ACQUISITION AND PROCESS CONTROL SYSTEM FOR AIR POLLUTION MONITORING</title>
      <link>https://trid.trb.org/View/55125</link>
      <description><![CDATA[This report gives an overview of the systems software and individal programs used to program a Hewlett Packard mini-computer to control the processes within a mobile air pollution monitoring laboratory and to acquire and store aerometric data.  The mobile laboratories were constructed for use in microscale modeling studies along active highways.  The appendix contains listings of the developed programs which were coded in Assembly language and FORTRAN. /Author/]]></description>
      <pubDate>Tue, 27 Dec 1977 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/55125</guid>
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    <item>
      <title>A MOBILE LABORATORY FOR MONITORING AIR POLLUTION FROM MOTOR VEHICLES</title>
      <link>https://trid.trb.org/View/33653</link>
      <description><![CDATA[The equipping and instrumentation of a mobile laboratory for monitoring atmospheric pollution from motor vehicles is described. The instruments for measuring the concentrations of the various pollutants and associated meteorological conditions are described in detail together with the way in which the data is processed. /Author/TRRL/]]></description>
      <pubDate>Wed, 05 Nov 1975 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/33653</guid>
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    <item>
      <title>A MOBILE WIDE-BAND MEASUREMENT SYSTEM FOR URBAN MAN-MADE NOISE</title>
      <link>https://trid.trb.org/View/139222</link>
      <description><![CDATA[This paper describes in detail the criteria for the design of a mobile laboratory for the characterization and measurement of man-made electromagnetic noise in the urban, suburban, and rural environment.  A significant difference from previous similar measurements is the bandwidth of the receiving system, which is here of the order of 1 MHz.  A simple model is proposed to describe the impulsive noise together with a series of experiments to validate the model and determine the significant necessary parameters.  The detailed requirements for each of the subsystems of the mobile laboratory are discussed and some typical results obtained in trial runs are presented.]]></description>
      <pubDate>Tue, 12 Nov 1974 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/139222</guid>
    </item>
    <item>
      <title>MARYLAND'S MOBILE SOILS LABORATORY</title>
      <link>https://trid.trb.org/View/121557</link>
      <description><![CDATA[AFTER BEING IN SERVICE WELL OVER A YEAR, THE TRAILER LABORATORY OF THE MARYLAND STATE ROADS COMMISSION HAS PROVED ITS VALUE BEYOND QUESTION. BUILT AT A COST OF ABOUT $3200 ON A STANDARD 23-FT. CHASSIS, THE TRAILER INCLUDES A STOVE, OVEN, SINK, LIGHT PLANT, COMPRESSOR, SIEVE SHAKER, VENTILATING AND DRYING FANS, ETC. THE TRAILER IS SO EQUIPPED THAT ALL FIELD TESTS MAY BE MADE ON SOILS, SUCH AS GRADING, DENSITY, MOISTURE CONTENT, PLASTICITY, ORGANIC MATTER, AND OTHERS. WHILE SUCH DETERMINATIONS ARE NOT SO ACCURATE OR SO DETAILED AS WOULD BE OBTAINABLE IN THE MAIN LABORATORY, THE RESULTS ARE MUCH SUPERIOR TO WHAT MIGHT BE OBTAINED IN THE USUAL FIELD LABORATORY HOUSED IN SOME TEMPORARY FIELD "SHACK." WITH THIS PORTABLE LABORATORY IT IS POSSIBLE TO MAKE TESTS IN AN HOUR THAT WOULD CONSUME TWO DAYS IF TEST SAMPLES HAD TO BE SUBMITTED TO THE MAIN LABORATORY. /AUTHOR/]]></description>
      <pubDate>Sun, 03 Oct 1971 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/121557</guid>
    </item>
    <item>
      <title>GENERAL MOTORS MOBILE EMISSION LABORATORY</title>
      <link>https://trid.trb.org/View/114559</link>
      <description><![CDATA[INFORMATION IS GIVEN ON THE DESIGN CRITERIA AND CONCEPT, CONSTRUCTION FEATURES OF THE TRAILER, AND A DISCUSSION OF THE INSTRUMENTATION NEEDED TO CONDUCT VEHICLE EMISSION TESTS. PRIMARY APPLICATIONS INCLUDE CUSTOMER CAR FIELD SURVEILLANCE AND ASSISTANCE TO ASSEMBLY PLANT EMISSION TESTING. THE MOBILE LABORATORY HAS A TEMPERATURE-CONTROLLED AREA, ALLOWING TESTING REGARDLESS OF OUTSIDE WEATHER CONDITIONS. BOTH CONCENTRATION AND MASS EMISSION TESTING CAN BE DONE WITH SUFFICIENT FLEXIBILITY TO ADAPT TO FUTURE EMISSION STANDARDS. A CUSTOM BUILT SEMI-TRAILER WAS CHOSEN TO FULFILL THE NEEDS OF THE MOBILE LABORATORY. A DESIGN STUDY WAS UNDERTAKEN TO DETERMINE THE BEST WAY ALL THE NECESSARY COMPONENTS COULD BE PACKAGED IN A SEMI-TRAILER BODY. /HSL/]]></description>
      <pubDate>Wed, 26 May 1971 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/114559</guid>
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