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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>
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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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      <link>https://trid.trb.org/</link>
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    <item>
      <title>STUDY ON HYDROSTATIC DRIVES FOR SMALL AGT VEHICLES</title>
      <link>https://trid.trb.org/View/89430</link>
      <description><![CDATA[This report presents an analysis of hydrostatic drives applicable as propelling units for Automated Guideway Transit (AGT) small vehicles. The study includes a comprehensive state-of-the-art survey of hydrostatic drive units and the development, design, and performance requirements for a 15 HP hydrostatic drive propulsion system for an AGT system. The study included a series of testing on a 15 HP unitized hydrostatic unit to evaluate performance characteristics and acoustic noise. Acoustic noise of hydraulic equipment, especially the hydrostatic drive, has been studied and the findings reported herein. A series of tests were performed on the unitized 15 HP hydrostatic drive to simulate an AGT small vehicle duty cycle using a 20 and 29 GPM hydraulic motor.  These tests were conducted on an eddy-current clutch dynameter, 35 HP capacity, and utilized specially designed and developed processor to produce the simulated duty cycle during the tests. In addition, noise level tests were performed on the unitized hydrostatic drive with the 20 and 29 GPM hydrostatic motor and applied with and without shield constructed as a box to dampen hydrostatic drive noise. Also, a trade-off analysis comparing the hydrostatic drive unit with the AC electric drive motor with eddy-current clutch/brake and DC electric motors for application as AGT vehicle propulsion system was done.]]></description>
      <pubDate>Fri, 07 Nov 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/89430</guid>
    </item>
    <item>
      <title>BART (BAY AREA RAPID TRANSIT) MULTI-MODAL TERMINAL PLAN, CITY OF WALNUT CREEK, CALIFORNIA</title>
      <link>https://trid.trb.org/View/62274</link>
      <description><![CDATA[As a basis for evaluating alternative designs to correct the deficiencies of the existing station and to deal with demands from anticipated changes, the following goals were developed: Maximize the value of the public investment in the BART system and encourage use of the system by maintaining and improving the accessibility of the station to all modes of transportation; conserve fuel and reduce pollution by encouraging use of public feeder transit service to the BART station; improve patron comfort and safety in the station area; encourage development in the station area that will relate to and enhance the value of the BART station as a multi-modal transportation terminal.]]></description>
      <pubDate>Sun, 26 Oct 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/62274</guid>
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      <title>EXPLORATORY NETWORK ANALYSES OF BART'S IMPACTS UPON ACCESSIBILITY</title>
      <link>https://trid.trb.org/View/29003</link>
      <description><![CDATA[The objective of the study was to (1) make a preliminary assessment of BART's impacts on areawide accessibility, and (2) evaluate the use of network-based accessibility measures as an impact analysis technique. Accessibility measures were based on estimates of zone-to-zone travel times and transit fares derived from networks developed for the 1971 'pre-BART' and 1976 'post-BART' highway and transit systems. The accessibility measures were expressed as simple indices, weighted by the size and characteristics of the resident population in the origin zone. Comparisons of the accessibility indices were made for both peak and off-peak travel times for selected destination zones in the BART service area. The selected zones represent the locations of important employment centers, shopping facilities, and hospitals. Assessments were made of BART's potential accessibility impacts on the racial minority, elderly, and low-income populations as well as the generation population.]]></description>
      <pubDate>Sat, 18 Oct 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/29003</guid>
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    <item>
      <title>THE ATLANTA RESEARCH CHAMBER; APPLIED RESEARCH FOR TUNNELS: BLASTING TECHNIQUES, CONVENTIONAL SHOTCRETE, STEEL-FIBER-REINFORCED SHOTCRETE. MONOGRAPHS ON THE STATE-OF-THE-ART OF TUNNELING</title>
      <link>https://trid.trb.org/View/89073</link>
      <description><![CDATA[This report describes the construction of the Atlanta Research Chamber and the research conducted in it. In addition, 24 monographs on the state-of-the-art of modern tunnel practice are included. The Atlanta Research Chamber was conceived as a team effort of 18 individuals from twelve engineering firms in the United States, Canada, and Austria to combine their special expertise to study various aspects of tunnel support system in hard rock. It was primarily a practical effort by practical engineers, attempting to develop useful tools for tunnel designers and builders. Later, the team was expanded, and a number of team members were asked to write monographs on modern tunnel practice. All have practical application, and by being gathered together in one volume, may serve to promote the common goal, which is to construct underground space economically and safely. To balance these predominately technical monographs, new team members were recruited to write monographs representing owners, contractors, labor, legal aspects, insurance, overseas practice, and additional technical ideas.]]></description>
      <pubDate>Mon, 29 Sep 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/89073</guid>
    </item>
    <item>
      <title>METROLINER RIDE IMPROVEMENT PROGRAM</title>
      <link>https://trid.trb.org/View/9497</link>
      <description><![CDATA[The objective of the program was to determine methods of improving the ride quality of the Metroliner railcars.  Two levels of modifications were considered:  first, modifications to the existing hardware and second, replacement of the present trucks.  In the conduct of the program road tests, track measurement and laboratory dynamic tests were performed on the present Metroliner.  The results of these tests were used to aid in the development of a dynamic simulation of the Metroliner, and assist in establishing the nature of track irregularities.  Once developed, the simulation was used to evaluate modifications to the present Metroliner and new truck configurations.]]></description>
      <pubDate>Sat, 27 Sep 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/9497</guid>
    </item>
    <item>
      <title>TRACKED AIR CUSHION VEHICLES AND MAGNETIC LEVITATION (CITATIONS FROM THE NTIS DATA BASE)</title>
      <link>https://trid.trb.org/View/49113</link>
      <description><![CDATA[The feasibility, design, and track dynamics of tracked air cushioned and magnetically levitated vehicles are investigated in these Government-sponsored research reports.]]></description>
      <pubDate>Sun, 31 Aug 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/49113</guid>
    </item>
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      <title>BART IMPACTS ON HIGHWAY TRAFFIC AND TRANSIT RIDERSHIP</title>
      <link>https://trid.trb.org/View/50895</link>
      <description><![CDATA[The 71-mile Bay Area Rapid Transit (BART) System, serving San Francisco, Oakland, Berkeley, and their suburbs, is the first regional-scale rapid transit system to open in the United States in over 50 years. This report is one of a series assessing the impacts of BART on transportation and travel in the Bay Area. The report documents what changes in aggregate highway traffic volumes, traffic congestion, bus ridership, and bus services have taken place in the four years since BART started service; and assesses the extent to which these changes may be attributable to BART. (Color illustrations reproduced in black and white.)]]></description>
      <pubDate>Fri, 15 Aug 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/50895</guid>
    </item>
    <item>
      <title>THE CONSEQUENCES OF TRANSIT FARE AND SERVICE POLICIES: A CLASSIFIED BIBLIOGRAPHY</title>
      <link>https://trid.trb.org/View/42629</link>
      <description><![CDATA[The bibliography is concerned with the consequences---most specifically the ridership and cost implications---of various policies regarding service and fare levels for urban public transit. Cited publications are classified under separate headings for ease in reference. These are: the demand for transit service; fare and service elasticities of demand; transit operating costs; the economics of transit pricing; public subsidies for transit operations; low-fare and no-fare transit; transit fare structures; transit fare and the distribution of income; transit and the transportation disadvantaged; transit planning, operation and evaluation; marketing transit; and general reference material.]]></description>
      <pubDate>Mon, 11 Aug 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/42629</guid>
    </item>
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      <title>THE SPECIAL STUDY OF ETHNIC MINORITIES IN THE BART IMPACT PROGRAM</title>
      <link>https://trid.trb.org/View/48875</link>
      <description><![CDATA[The paper is an examination of one aspect of the BART Impact Program, its evaluation of impacts of the system on ethnic minorities. It is primarily a discussion of the rationale for the inclusion of specific ethnic minority concerns in the overall evaluation program. The BART Impact Program is a comprehensive assessment of BART's impacts on the social and economic life of the San Francisco-Oakland metropolitan area. Goals of the program are to elucidate the relationships between public transit and community development and assess costs and benefits of a rail rapid transit system. Specific objectives of the BIP are to determine what the impacts are, who is affected, why anticipated results are or are not occurring, and how this knowledge of BART may be useful to decision makers. (Color illustrations reproduced in black and white.)]]></description>
      <pubDate>Tue, 17 Jun 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/48875</guid>
    </item>
    <item>
      <title>WHO ARE THE TRANSPORTATION DISADVANTAGED</title>
      <link>https://trid.trb.org/View/48876</link>
      <description><![CDATA[Who are the transportation disadvantaged?  The author proposes the definition -- those groups whose same opportunities for development have been hindered, either by omission or commission, by deficiencies in the transportation system. He then asks the question of whether those conditions which make an individual disadvantaged within the general societal context are the same conditions which make one transportation disadvantaged. He discusses income, disability, place of residence and place of employment, automobile accessibility, race, sex, and age as factors which may contribute to transportation disadvantage. The author concludes that only a tenuous case at best can be made that the poor, minorities, handicapped, elderly, women, and youth are really "transportation disadvantaged", but that these groups have certain general disadvantages vis-a-vis society which make them of special concern, in an equity sense, in planning a transportation system.]]></description>
      <pubDate>Tue, 17 Jun 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/48876</guid>
    </item>
    <item>
      <title>REPORTS BIBLIOGRAPHY, SUPPLEMENT JULY 1975-JUNE 1976</title>
      <link>https://trid.trb.org/View/47867</link>
      <description><![CDATA[This bibliography includes all reports published by the Transportation Systems Center from July 1975-June 1976. Abstracts and accession numbers are provided.]]></description>
      <pubDate>Sun, 27 Apr 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/47867</guid>
    </item>
    <item>
      <title>SELLING RAPID TRANSIT TO THE VOTERS, THE LOS ANGELES EXPERIENCE</title>
      <link>https://trid.trb.org/View/30654</link>
      <description><![CDATA[In 1968, an attempt was made to sell a sales tax and bond issue proposal to the voters of Los Angeles, California, for an 89 mile rapid transit system (Proposition A). The attempt failed to reach the required voter approval of 60% and even failed to achieve a simple majority. This report is an examination of that effort to learn what can be gained from the experience. The report includes a brief history of the various groups that preceded the final citizens group which undertook the promotion on behalf of the proposition. The report focuses on efforts to publicize the issue including actual sales techniques, the raising of funds, the separate roles of the transit district and citizen group, the opposition encountered, efforts to counteract specific opposition, and some retrospective insights as to why the issue ultimately lost at the ballot.]]></description>
      <pubDate>Sat, 29 Mar 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/30654</guid>
    </item>
    <item>
      <title>SUMMARY OF PHASE II ACTIVITIES</title>
      <link>https://trid.trb.org/View/14253</link>
      <description><![CDATA[The report has been prepared under the Transit Development Corporation (TDC) project, 'Ventilation and Environmental Control in Subway Rapid Transit Systems' and is one of many such reports leading to the final product--a 'Subway Environmental Design Handbook.' The report describes the various task assignments that were undertaken by all participating contractors during the second year of the project. It includes highlights of these activities, and identifies the major accomplishments. A list of the project technical reports prepared during the year is included. (Author)]]></description>
      <pubDate>Tue, 25 Mar 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/14253</guid>
    </item>
    <item>
      <title>AUTOMATIC FARE COLLECTION. SUPPLEMENTARY REPORT</title>
      <link>https://trid.trb.org/View/14255</link>
      <description><![CDATA[The report describes the final version of the fare collection equipment, and its operational characteristics through the first nine months of BART revenue service operation, September 1972 - May 1973.]]></description>
      <pubDate>Tue, 25 Mar 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/14255</guid>
    </item>
    <item>
      <title>TRANSPORTATION AND TRAVEL IMPACTS OF BART: INTERIM SERVICE FINDINGS. BART IMPACT PROGRAM. PHASE I</title>
      <link>https://trid.trb.org/View/63656</link>
      <description><![CDATA[The 71-mile Bay Area Rapid Transit (BART) System, serving San Francisco, Oakland, Berkeley and their suburbs, is the first regional-scale rapid transit system to open in the United States in 50 years. The final link of the system opened for service in September 1974. This report summarizes BART's initial impacts on regional transportation system performance and travel patterns. The report deals with the effects of interim BART service over the period September 1972 through June 1975. Impacts are assessed in terms of BART's design and operating characteristics; its service levels; changes in accessibility; the level and nature of BART's ridership; impacts on travel by bus and automobile; impacts on the service provided by the rest of the transit system; and impacts on traffic congestion. BART's capital costs, interim operating costs and revenues, and interim energy consumption are also analyzed. (Color illustrations reproduced in black and white.)]]></description>
      <pubDate>Sat, 15 Mar 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/63656</guid>
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