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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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      <title>The Greater Cleveland Regional Transit Authority’s (GCRTA) new East 55th Street Rapid Transit Station</title>
      <link>https://trid.trb.org/View/1280753</link>
      <description><![CDATA[The Greater Cleveland Regional Transit Authority’s (GCRTA's) new East 55th Street Rapid Transit Station grand opening was on October 11, 2011 after five years of planning and design followed by two years of construction. The new station replaces an outdated facility and is situated at the heart of GCRTA’s rail transit system where the Green, Red and Blue lines intersect. The East 55th Street Station location, at the ramp to I-490 in the City of Cleveland, is one of the busiest intersections in the City. The station serves heavy and light rail transit vehicles, accommodates intermodal connections with City bus service, and allows for vehicular drop-off outside the station entrance. The E55th Street Station was designed and built in compliance with the Americans with Disabilities Act (ADA) Accessibility Guidelines for Facilities published in the federal register July 23, 2004 and amended August 5, 2005 by the federal government Access Board.]]></description>
      <pubDate>Tue, 24 Dec 2013 13:09:36 GMT</pubDate>
      <guid>https://trid.trb.org/View/1280753</guid>
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    <item>
      <title>Soil Stabilizers on Universally Accessible Trails</title>
      <link>https://trid.trb.org/View/1122162</link>
      <description><![CDATA[According to the Americans with Disabilities Act Accessibility Guidelines, ground and floor surfaces should be firm, stable, and slip-resistant. Field personnel are provided with the results of soil stabilizers on universally accessible trails in this publication. Areas included in the study were the Bell Rock Pathway on the Coconimo National Forest and the Wood River Accessible Fishing Site and Day Use Area on the Winema National Forest. A discussion of seven types of trail surfaces products is included.]]></description>
      <pubDate>Wed, 16 Nov 2011 14:51:45 GMT</pubDate>
      <guid>https://trid.trb.org/View/1122162</guid>
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      <title>Recommended Procedures for Testing and Evaluating Detectable Warning Systems</title>
      <link>https://trid.trb.org/View/981955</link>
      <description><![CDATA[This report presents a set of recommended test methods for evaluating durability of detectable warning systems.  These methods address exposure regimes, test procedures, and evaluation criteria to help select detectable warning systems that provide long-term performance and durability while meeting the requirements of the Americans with Disabilities Act Accessibility Guidelines (ADAAG).  The test methods are presented in AASHTO format to facilitate consideration and incorporation into the "AASHTO Standard Specifications for Transportation Materials and Methods of Sampling and Testing."  The material contained in the report should be of immediate interest to state materials engineers and those concerned with the different aspects of the ADAAG.]]></description>
      <pubDate>Wed, 03 Nov 2010 15:58:37 GMT</pubDate>
      <guid>https://trid.trb.org/View/981955</guid>
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      <title>Space Requirements for Wheeled Mobility Devices in Public Transportation: Analysis of Clear Floor Space Requirements</title>
      <link>https://trid.trb.org/View/911145</link>
      <description><![CDATA[Recent research on the anthropometry of wheeled mobility devices and their users (n = 369) indicates that the current dimensions for clear floor area prescribed in U.S. accessibility standards for transportation are inadequate for accommodating many users of wheeled mobility devices, especially those who use power chairs and scooters. The current report presents anthropometry data for determining the dimensions of clear floor area on the basis of occupied device length and width to achieve a specified level of physical accommodation. The implications of the findings and the need to revise guidelines for accessible public transportation systems are discussed. The transportation industry as well as mobility device manufacturers, vendors, and prescribers should understand the limitations of current standards and become involved in the dialogue about how to improve them.]]></description>
      <pubDate>Wed, 14 Apr 2010 07:14:24 GMT</pubDate>
      <guid>https://trid.trb.org/View/911145</guid>
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      <title>Americans with Disabilities Act: Accessibility Guidelines for Buildings and Facilities (ADAAG)</title>
      <link>https://trid.trb.org/View/855712</link>
      <description><![CDATA[This document contains scoping and technical requirements for accessibility to buildings and facilities by individuals with disabilities under the Americans with Disabilities Act (ADA) of 1990. These scoping and technical requirements are to be applied during the design, construction, and alteration of buildings and facilities covered by titles II and III of the ADA to the extent required by regulations issued by Federal agencies, including the Department of Justice and the Department of Transportation, under the ADA.]]></description>
      <pubDate>Wed, 21 May 2008 07:09:57 GMT</pubDate>
      <guid>https://trid.trb.org/View/855712</guid>
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      <title>Understanding the Current Transportation Needs of Elderly and Disabled Persons</title>
      <link>https://trid.trb.org/View/810216</link>
      <description><![CDATA[This paper describes how transportation, which has received limited attention in the past, has become a critical issue for the elderly and disabled because of social trends.  Today, the disabled are achieving greater social integration in terms of education, employment and leisure.  Alone, this trend has required that the disabled community have full access to transportation systems in order to facilitate such integration.  To permit participation in community-based training and rehabilitation programs, and to secure subsequent entry to the many employment opportunities currently emerging as a result of new technologies, the disabled, like the general public, require unlimited access to modern transportation systems.  Given the genuine interest of industry representatives in assisting the disabled, and ideal methodology to be employed is one based on cooperative problem solving.  With the government, industry and the disabled working together, realistic solutions can emerge.  The disabled possess a detailed understanding of the issues involved and the possible means of obtaining solutions.  The government as the responsible party can take a leadership role in demonstrating concern. One of the dangers that is always associated with advocacy by the disabled community, is the emergence of an attitude that adopts a stance based on legal right. To adopt this stance can only serve to threaten and cause greater friction and a further attitudinal barrier.  The paper describes how, unless the disabled community begins to work together on important issues such as transportation, little real progress will be made.]]></description>
      <pubDate>Thu, 14 Jun 2007 15:14:22 GMT</pubDate>
      <guid>https://trid.trb.org/View/810216</guid>
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    <item>
      <title>GIS Adds Curb Appeal: Making Sidewalks Compliant is a Straightforward Issue</title>
      <link>https://trid.trb.org/View/793479</link>
      <description><![CDATA[This article describes how the city of Austin, Texas is using a custom geographic information system (GIS) toolset to make the city's sidewalks comply with the Americans with Disabilities Act (ADA) accessibility standards. The toolset, known as the Pedestrian Infrastructure Management System, scores the city's sidewalks on their ADA compliance, which allows the public work's staff to efficiently rank construction and maintenance needs. The three criteria that are used for prioritizing locations are based on proximity analysis to pedestrian attractors and risks, existing maintenance condition, and ADA compliance of the existing infrastructure. During the first phase of the project, 16,000 potential construction locations were scored in a few hours compared to an hour spent by staff to determine the priority of a single location.]]></description>
      <pubDate>Tue, 28 Nov 2006 11:32:50 GMT</pubDate>
      <guid>https://trid.trb.org/View/793479</guid>
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    <item>
      <title>Ferry Vessel Disabled Access: Case Study of Toilet Facilities</title>
      <link>https://trid.trb.org/View/776848</link>
      <description><![CDATA[Passenger ferries have proliferated in recent years. The US Access Board, a Federal agency tasked with developing accessibility standards, is in the process of developing accessibility standards for passenger vessels. A milestone in this process was reached with the publication in November 2004 of the Draft Passenger Vessel Accessibility Guidelines and Supplementary Information for vessel accessibility (PVAG). This paper applies the PVAG accessibility criteria for toilet facilities to a sampling of existing ferry vessels, and assesses and demonstrates the feasibility of incorporating those criteria to a range of ferry vessel designs. The paper concludes that with roughly 10 additional square feet per toilet space, (one passenger unit of deck space, and about a third more deck space than the existing toilet rooms) the existing toilet spaces could probably have been designed to satisfy the PVAG criteria for door clear opening and maneuvering space, wheelchair turning space, and fixture clearances, critical elements for getting in and out of and being able to use toilet room facilities. The paper provides insights on the design challenges of ferry and similar passenger vessel accessibility. The purpose of the paper is to inform marine designers and vessel operators of responsibilities for and opportunities to provide accessible toilet spaces on ferry vessels.]]></description>
      <pubDate>Thu, 08 Jun 2006 11:26:08 GMT</pubDate>
      <guid>https://trid.trb.org/View/776848</guid>
    </item>
    <item>
      <title>DURABILITY OF TRUNCATED DOME SYSTEMS (A.K.A. DETECTABLE WARNINGS ON WALKING SURFACES)</title>
      <link>https://trid.trb.org/View/643237</link>
      <description><![CDATA[The Americans with Disabilities Act (ADA) has established accessibility requirements for State and local government facilities, places of public accommodation and commercial facilities.  Under the ADA, the Access Board has developed and maintains design guidelines known as the ADA Accessibility Guidelines (ADAAG).  ADAAG establish minimum requirements for new construction and alterations, which primarily cover facilities on sites, but has added new provisions specific to public rights-of-way.  The provisions include the installation of truncated domes on sidewalks at roadway intersections.  The guidelines apply where a pedestrian route is altered as part of a planned project to improve existing public rights-of-way. This report summarizes a test program to document the durability of eight truncated dome systems under winter maintenance conditions of plowing and surface deicing treatment.  Sidewalk test sections were prefabricated and dome systems were applied in a shop during December 2002 and January 2003.  Following field assembly of the test sections, snow plowing operations were conducted as part of the City of Concord maintenance schedule in March 2003.  The test area was also manually covered with snow and plowed repeatedly to compensate for the late start of the project.  After 20 plowing cycles, two of the four products complying with the current dimensional requirements of the ADAAG stood out in their performance.  Two of the four non-compliant products were also found to have durable qualities.]]></description>
      <pubDate>Thu, 22 May 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/643237</guid>
    </item>
    <item>
      <title>KEYS TO PROPER SPEC'ING OF WHEEL CHAIR LIFTS</title>
      <link>https://trid.trb.org/View/693347</link>
      <description><![CDATA[Meeting Americans with Disabilities Act (ADA) specifications for wheelchair lifts on buses is not enough to handle actual wheelchairs in many cases, because they are often wider and heavier than the specs will accommodate, and disabled riders are using a wider range of vehicles, such as scooters. Some transit operations are turning to ramps in low-floor buses rather than lifts.  Still, advances in lift design continue to be made.]]></description>
      <pubDate>Fri, 28 Sep 2001 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/693347</guid>
    </item>
    <item>
      <title>ACCESSIBILITY HANDBOOK FOR TRANSIT FACILITIES</title>
      <link>https://trid.trb.org/View/368950</link>
      <description><![CDATA[This document is a handbook that will help architects, engineers, and transit system managers to understand and follow the Federal Government regulations contained in the Final Rule, 49 CFR Part 37, which describes the requirements for transportation facilities to be accessible to persons with disabilities.  This handbook explains what is required by the regulations in language that is easy to understand and includes a large number of illustrations which further clarify the requirements for accessibility.  The major areas of accessibility addressed are transit facilities and the ADA, facility site and entrances, interior elements, and waiting and boarding areas.  Included in this handbook are facilities accessibility checklists which ask numerous questions about facilities and vehicle requirements.  Using the checklists, anyone assessing the accessibility of a facility can answer the questions and use the responses to determine where accessible features need to be added or improved.  This handbook is a companion to the Final Rule and is a reference source for questions about transit facility accessibility.]]></description>
      <pubDate>Sun, 08 Dec 1996 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/368950</guid>
    </item>
    <item>
      <title>ASSESSMENT OF DETECTABLE WARNING DEVICES FOR SPECIFICATION COMPLIANCE OR EQUIVALENT FACILITATION</title>
      <link>https://trid.trb.org/View/368995</link>
      <description><![CDATA[This report evaluates the Americans with Disabilities Act Accessibility Guidelines (ADAAG) specification for detectable warnings and the applicability of equivalent facilitation to the development of detectable warning devices.  Abiguities in the specification are identified and solutions are recommended to address these problems.  Detectable warnings are intended to aid the visually impaired to detect the presence of hazards on a circulation path.  Transit authorities and manufacturers developing detectable warnings for use at rail platforms have requested assistance in interpreting the specification.  Lack of precision in the specification language allows different interpretations, resulting in products that vary widely in their designs.  The evolution of the detectable warning specification and the human performance considerations that led to changes in the specification are discussed.  Recommendations are given for clarifying the language and eliminating the ambiguity in the specification.  For transportation authorities unable to comply with the ADA detectable warning specification, the guidelines provide an alternative mechanism by which accessibility requirements may be met.  Equivalent Facilitation permits the use of alternative designs provided they give equal or better access.  The implications of departures from the specification are discussed and several tests are suggested for determining whether an alternative design meets the equivalent facilitation criterion.]]></description>
      <pubDate>Fri, 02 Feb 1996 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/368995</guid>
    </item>
    <item>
      <title>ASSESSMENT OF DETECTABLE WARNING DEVICES FOR SPECIFICATION COMPLIANCE OR EQUIVALENT FACILITATION. FINAL REPORT</title>
      <link>https://trid.trb.org/View/380606</link>
      <description><![CDATA[This report evaluates the Americans with Disabilities Act Accessibility Guidelines (ADAAG) specifications for detectable warnings and the applicability of equivalent facilitation to the development of detectable warning devices.  Ambiguities in the specification are identified and solutions are recommended to address these problems.  This report should be useful to transit agencies unable to comply with the ADA detectable warning specifications.  The guidelines provide an alternative mechanism by which accessibility requirements may be met.  Equivalent Facilitation permits the use of alternative designs provided they give equal or better access.  The implications of departures from the specification are discussed and several tests are suggested for determining whether an alternative design meets the equivalent facilitation criterion.]]></description>
      <pubDate>Thu, 18 Nov 1993 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/380606</guid>
    </item>
    <item>
      <title>THE APPLICATION OF THE QUALITY FUNCTIONAL DEPLOYMENT METHOD FOR THE DEVELOPMENT OF AN INDEPENDENT LOCKING SECUREMENT SYSTEM FOR MOBILITY AIDS ON PUBLIC TRANSPORTATION VEHICLES: EXECUTIVE SUMMARY</title>
      <link>https://trid.trb.org/View/374934</link>
      <description><![CDATA[The Independent Locking Securement System Project (ILS System Project) focused on the analysis of the mobility aid securement problem, the design and construction of several securement system prototypes, and extensive testing of both the operational and engineering aspects of the prototypes.  The primary objective of the ILS System Project was to design, build and test a wheeled mobility aid securement system that would operate with all mobility aids in "common use" on fixed route transit vehicles.  The major requirements for the system were to: maximize mobility aid user independence, minimize transit vehicle operator involvement, minimize securement and release time, and satisfy all the proposed securement standards and guidelines.]]></description>
      <pubDate>Wed, 28 Jul 1993 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/374934</guid>
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    <item>
      <title>APPLICATION OF THE QUALITY FUNCTIONAL DEPLOYMENT METHOD IN MOBILITY AID SECUREMENT SYSTEM DESIGN. VOLUME 1</title>
      <link>https://trid.trb.org/View/375637</link>
      <description><![CDATA[The Quality Functional Deployment (QFD) method was used for the design of the Independent Locking Securement (ILS) System, developed by Oregon State University.  The project entailed the design, construction, and testing of the ILS system prototypes. The QFD approach included surveying present technology, establishing customer requirements, studying design loads, determining functional decomposition of the device requirements, establishing engineering requirements, bench marking present technology, generating new ideas, selecting a final design, construction of several prototypes, conducting human-factor testing, and undertaking both static and dynamic tests, and making a final recommendation of the design.  An Advisory Committee consisting of persons with disabilities and representatives of a number of transit agencies assisted with the design and calibration of the QFD matrix.  The final report is in two volumes.  Volume 1 documents the QFD methodology and the development of the final design specifications and the state of the art in securement systems.  Volume 2 describes the ILS system concept, and documents the results of the human factor testing, static and dynamic testing, and makes recommendations for the final design concept.  An executive summary describes both the development and the concept of the ILS system.]]></description>
      <pubDate>Wed, 28 Jul 1993 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/375637</guid>
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