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<!DOCTYPE html> <html lang="en-US"> <head> <meta charset="utf-8" /> <title>Search Help - TRID</title> <meta name="description" content=""> <meta name="viewport" content="width=device-width, initial-scale=1" /> <meta name="appSettings" content="{"appsettings-analytics-code":"G-SRKBY170K5","AuthString":"Basic dHJ0LWFwaTpzNmVmcmljaGlDaGxwcmVwZXRybw==","HostUrl":"https://km.nationalacademies.org","ProjectId":"1E14BF7D-5071-0001-2C24-87541D6181E0"}" /> <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.6/css/bootstrap.min.css" /> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.6/css/bootstrap-theme.min.css" /> <link rel="preconnect" href="https://fonts.googleapis.com"> <link href="https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;700&display=swap" rel="stylesheet"> <script async 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15px; } .panel-body p { margin: 0; margin-bottom: 1.5rem; } .panel-body ul li { padding: 0.5rem 0; } #help-pubflags { position: relative; max-width: clamp(300px, 60%, 600px); height: 150px; margin: auto auto 10px auto; filter: drop-shadow(0 0 0.5rem #aaaa); overflow: hidden; } #help-pubflags div { position: absolute; inset: 0; background-image: url(/Images/help-pub-flags.png); background-position: center center; background-repeat: no-repeat; background-size: contain; width: 100%; } #help-reportnumbers { position: relative; max-width: clamp(300px, 100%, 900px); height: 450px; margin: -70px auto 10px auto; /*filter: drop-shadow(0 0 0.5rem #aaaa);*/ overflow: hidden; } #help-reportnumbers div { position: absolute; inset: 0; background-image: url(/Images/help-reportnumbers.svg); background-position: top center; background-repeat: no-repeat; background-size: cover; width: 100%; } #help-reportnumbers div::after { content: ''; position: absolute; left: 0; bottom: 0; right: 0; height: 20%; background: linear-gradient(transparent, 50%, white); } #help-resultsbar { position: relative; max-width: clamp(300px, 80%, 800px); height: 100px; margin: auto auto 10px auto; filter: drop-shadow(0 0 0.5rem #aaaa); overflow: hidden; } #help-resultsbar div { position: absolute; inset: 0; background-image: url(/Images/help-results-bar.png); background-position: center center; background-repeat: no-repeat; background-size: contain; width: 100%; } #help-fulltext { position: relative; max-width: clamp(300px, 60%, 600px); height: 200px; margin: auto auto 10px auto; /* filter: drop-shadow(0 0 0.75rem gray); */ border-radius: 5rem; overflow: hidden; } #help-fulltext div { position: absolute; inset: 0; background-image: url(/Images/help-full-text-links.png); background-position: center center; background-repeat: no-repeat; background-size: contain; width: 100%; filter: saturate(200%) } #help-fulltext div::before { content: ''; position: absolute; left: 0; top: 0; right: 0; height: 40%; -webkit-backdrop-filter: grayscale(70%); backdrop-filter: grayscale(70%); background: linear-gradient(white, 50%, transparent); } #help-fulltext div::after { content: ''; position: absolute; left: 0; bottom: 0; right: 0; height: 43%; -webkit-backdrop-filter: grayscale(70%); backdrop-filter: grayscale(70%); background: linear-gradient(transparent, 50%, white); } .style-input { display: inline-block; background: linear-gradient(to right, #eee6, #eee6); background-color: #fff; padding: 0.6rem 1.2rem; padding-right: 4rem; border-radius: 0.3rem; border: 1px solid lightgray; box-shadow: inset 1px 1px 3px #0002; } .btn.site-button { background-color: #444; vertical-align: baseline; } .btn.site-button a { color: #fff !important; text-decoration: none; } .panel-body .marking-actions { margin-left: 4rem; /* box-shadow: 0.25rem 0.25rem 0.25rem #aaaa, -0.25rem -0.25rem 0.25rem #aaaa; */ } .panel-body .marking-actions a { text-decoration: none; } .marked-actions { flex: 0 0 auto; display: flex; margin-left: 4rem; margin-bottom: 1rem; margin-top: 1rem; } .marked-actions #markCount { margin: 0; padding-right: 0.3rem; } .marked-actions #markCount a { text-decoration: none; } .marked-actions p::after { content: '|'; padding-left: 0.3rem; } .marked-actions ul li { padding: 0; } .marked-actions ul li span, .marked-actions p span, .marking-actions span span { color: #337ab7; } .marked-actions ul li:not(:first-child)::before { content: '·'; padding-right: 0.2rem; } .click-hint { margin-left: 2rem; } .major-marker { display: flex; flex-direction: column; justify-content: start; align-items: center; width: 10rem; } .major-marker-label { font-size: 0.7rem; font-weight: 600; } [data-icon="project"] .major-icon { margin: 0; background-repeat: no-repeat; width: 3rem; background-size: 3rem; aspect-ratio: 1 / 1; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1024 1024'%3E%3Cpath d='M768 85.333H554.667C554.667 108.8 535.467 128 512 128s-42.667-19.2-42.667-42.667H256c-46.933 0-85.333 38.4-85.333 85.333v682.667c0 46.933 38.4 85.333 85.333 85.333h512c46.933 0 85.333-38.4 85.333-85.333V170.667c0-46.933-38.4-85.333-85.333-85.333z' fill='%23455a64'/%3E%3Cpath d='M768 874.667H256c-12.8 0-21.333-8.533-21.333-21.333V170.667c0-12.8 8.533-21.333 21.333-21.333h512c12.8 0 21.333 8.533 21.333 21.333v682.667c0 12.8-8.533 21.333-21.333 21.333z' fill='%23fff'/%3E%3Cg fill='%2390a4ae'%3E%3Cpath d='M554.667 85.333C554.667 108.8 535.467 128 512 128s-42.667-19.2-42.667-42.667H320v85.333c0 23.467 19.2 42.667 42.667 42.667h298.667c23.467 0 42.667-19.2 42.667-42.667V85.333H554.667z'/%3E%3Cpath d='M512 0c-46.933 0-85.333 38.4-85.333 85.333s38.4 85.333 85.333 85.333 85.333-38.4 85.333-85.333S558.933 0 512 0zm0 128c-23.467 0-42.667-19.2-42.667-42.667s19.2-42.667 42.667-42.667 42.667 19.2 42.667 42.667S535.467 128 512 128z'/%3E%3C/g%3E%3Ccircle cx='809.218' cy='804.616' r='194.059' fill='%23fff'/%3E%3Cpath d='M448 426.667h256v42.667H448zm-128-21.333h85.333v85.333H320z' fill='%23cfd8dc'/%3E%3Cpath d='M448 618.667h256v42.667H448zm-128-21.333h85.333v85.333H320z' fill='%23007bbd'/%3E%3Cpath d='M806.923 607.125a201.332 201.332 0 1 0 201.332 201.332 201.562 201.562 0 0 0-201.332-201.332zm0 373.902a172.57 172.57 0 0 1 0-345.141v172.57l121.964 121.964a172.038 172.038 0 0 1-121.964 50.606z'/%3E%3C/svg%3E"); } /* Supporting figure for term/subject free text search */ .term-search-figure { position: relative; display: grid; gap: 2rem; grid-template-columns: repeat(3, 1fr); align-items: end; justify-content: start; max-width: 70rem; margin: 3rem auto; padding: 1rem; box-shadow: 0 0 0.5rem #aaaa; } .partial-record-view { grid-column: 1 / 3; } .partial-record-view h2 { margin: 0; font-size: 18px; line-height: normal; } .partial-record-view ul { margin: 0; padding: 0; list-style-type: none; } .partial-record-view li { padding: 0 !important; } .faux-link { text-decoration: underline; color: var(--dark-complementary-color); } .callout-box { padding: 1rem 1.25rem; grid-column: var(--start-col, 2); grid-row: var(--start-row, 1); outline: 3px solid #000; outline-offset: 0.25rem; border-radius: 0.25rem; justify-self: end; } .callout-box > svg { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; } .grid-left { justify-self: start; } .highlight-box { outline: 3px solid #f77; outline-offset: 0.25rem; border-radius: 0.25rem; } .grid-2col { grid-column-end: calc(var(--start-col) + 2); } .arrow { stroke: rgb(0, 0, 0); stroke-width: 2; marker-end: url(#markerArrow) } .closer-row { margin-top: -1rem; } /* Icon-based buttons */ .icon { display: inline-flex; vertical-align: middle; width: 4rem; font-size: 0.8rem; background-size: 2.5rem, 100%; background-repeat: no-repeat; background-position: center; aspect-ratio: 1 / 1; border: none; background-color: transparent; border-radius: 10px; overflow: hidden; flex-direction: column; justify-content: end; align-items: center; } .icon::before { color: Black; margin-bottom: -0.2rem; font-weight: 600; } .icon[data-icon="delete"] { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2'%3E%3Cpath d='M10 12v5m4-5v5M4 7h16M6 10v8a3 3 0 0 0 3 3h6a3 3 0 0 0 3-3v-8' stroke-linecap='round' stroke-linejoin='round'/%3E%3Cpath d='M9 5a2 2 0 0 1 2-2h2a2 2 0 0 1 2 2v2H9V5z' stroke-linejoin='round'/%3E%3C/svg%3E"); margin: 0; margin-top: -1.5rem; padding: 0; &::before { content: 'DELETE'; } } .icon[data-icon="view"] { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none'%3E%3Cpath fill-rule='evenodd' d='M1 5a3 3 0 0 1 3-3h4.438a3 3 0 0 1 2.91 2.272L11.781 6H13.5 20a3 3 0 0 1 3 3v2a1 1 0 1 1-2 0V9a1 1 0 0 0-1-1h-6.5-1.719H4a1 1 0 0 0-1 1v1 9a1 1 0 0 0 1 1h5a1 1 0 1 1 0 2H4a3 3 0 0 1-3-3v-9-1-4zm2 1.171C3.313 6.06 3.649 6 4 6h5.719l-.311-1.243A1 1 0 0 0 8.438 4H4a1 1 0 0 0-1 1v1.171zm17.172 12.587c.523-.79.828-1.738.828-2.757a5 5 0 1 0-10 0 5 5 0 0 0 5 5c1.019 0 1.967-.305 2.757-.828l2.535 2.535a1 1 0 0 0 1.414-1.414l-2.535-2.535zM13 16a3 3 0 1 1 6 0 3 3 0 1 1-6 0z' fill='%23000' /%3E%3C/svg%3E"); text-decoration: none; &::before { content: 'VIEW'; } } </style> </head> <body> <div id="downtime-banner"> <p>TRID will be unavailable due to system maintenance from <time datetime="2025-03-01T09:00:00-05:00">9a</time> - <time datetime="2025-03-01T17:00:00-05:00">5p EST</time> on Saturday, March 1st.</p> <button id="close-banner" aria-label="Close notification">×</button> </div> <nav id="site-header" class="navbar navbar-default navbar-static-top navbar-toggle-left" role="navigation"> <div class="container-fluid"> <button type="button" class="navbar-toggle collapsed" aria-expanded="false"> <span class="sr-only">Toggle navigation</span> <span class="menu-label">Menu</span> </button> <div class="logo-bar"> <a id="nas-logo" href="http://www.national-academies.org/"> <svg xmlns="http://www.w3.org/2000/svg" width="250" viewBox="0 0 360 66.64" aria-labelledby="nas-logo-title" role="img"> <title id="nas-logo-title">National Academies of Sciences, Engineering, and Medicine</title> <defs></defs> <path d="m4.26 8.63 19.56 20.49V1.72h-3.47v18.93L.8.16v27.32h3.46V8.63zM32.55 27.48h3.83l8.15-19.2 7.93 18.99.09.21h3.82L44.62 0 32.55 27.48zM175.05 27.48h3.83l8.16-19.2 7.93 18.99.08.21h3.83L187.12 0l-12.07 27.48zM68.23 27.48h3.47V5.03h7.72V1.72H60.51v3.31h7.72v22.45zM90.08 1.72h3.46v25.76h-3.46z" class="cls-1"></path> <path d="M157.14 38.67A13.39 13.39 0 1 0 143.75 52a13.21 13.21 0 0 0 13.39-13.33Zm-3.54 0a9.85 9.85 0 1 1-9.85-10 9.93 9.93 0 0 1 9.85 10Z" class="cls-1" transform="translate(-24.97 -24.05)"></path> <path d="m146.56 8.63 19.56 20.49V1.72h-3.47v18.93L143.1.16v27.32h3.46V8.63zM210.95 1.72h-3.46v25.76h13.8v-3.31h-10.34V1.72z" class="cls-1"></path> <path d="M67.41 63A13.13 13.13 0 0 0 54 76.37a13 13 0 0 0 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title="https://www.nationalacademies.org/trb/events"> <img src="/images/trb-banner-2025-02.webp" width="1110" height="260" alt="https://www.nationalacademies.org/trb/events" /> </a> </div> </div> </div> <div class="row"> <div class="col-xs-12"> <h1 align="center"> Search Help </h1> <ul class="nav nav-pills nav-justified"> <li role="presentation"><a href="#General" style="text-decoration: none;">General Help</a></li> <li role="presentation"><a href="#Fields" style="text-decoration: none;">Search Fields</a></li> </ul>  <a name="General"></a> <h2 align="center"> General Help </h2> <div class="panel-group" id="accordion-general"> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-general" href="#general-keyword"> Basic Keyword Search <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="general-keyword" class="panel-collapse collapse in"> <div class="panel-body"> <p>The <b>Keyword</b> field can be searched by itself from the <a href="/">TRID Home page</a> or <a href="/results#show-filters">Advanced Search Filters</a> form, or in combination with any/all other available text fields and limits in the <a href="/results#show-filters">Advanced Search Filters</a>.</p> <p>Searching the Keyword field from either the home page or in the <a href="/results#show-filters">Advanced Search Filters</a> includes all of the indexed fields in TRID: title; abstract; notes; index terms; subject areas; record accession numbers (both TRIS and ITRD); authors (corporate/organization and personal); serial or conference; paper, report, contract or grant numbers.</p> <div class="alert alert-info callout-container" role="alert"> <span class="glyphicon glyphicon-hand-right" aria-hidden="true"></span> <p>TRID works best with <a href="https://onlinepubs.trb.org/Onlinepubs/tris/SearchHistoryBoolean.pdf">Boolean (AND, OR, NOT) logic</a>. See the section below on <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-general" href="#general-searchtips" style="display: inline; padding: 0; margin: 0; text-decoration: underline;">Advanced Search Tips</a> for a more detailed explanation and search examples.</p> </div> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-general" href="#general-fulltext"> Full Text Access <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="general-fulltext" class="panel-collapse collapse"> <div class="panel-body"> <p>With the exception of Transportation Research Board (TRB) and Highway Research Board (HRB) publications, most publications (reports, books, journal articles, conference papers etc.) indexed in TRID are not owned or held by TRB, Transportation Research Information Services (TRIS) or the TRB Library.</p> <p>All links provided in TRID records are either free or fee-based full text. Users can limit their searches to records that contain links to free or fee-based full text by using the checkbox below the <b>Keyword</b> field in the Advanced Search filters.</p> <div id="help-fulltext"> <div></div> </div> <p>In most cases, access to full text of a given publication is determined by your local institution’s online subscriptions. Contact your local institution’s library or information center to place an interlibrary loan request when you are unable to access full text or if no Record URL (link to full text on the publisher’s site) is provided.</p> <p>Most U.S. federal and state Department of Transportation and University Transportation Center publications are freely accessible online with the links provided in TRID.</p> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-general" href="#general-pubflags"> Publication Flags <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="general-pubflags" class="panel-collapse collapse"> <div class="panel-body"> <p>In your results list, an orange open access icon appears in front of some titles that are freely available online. These articles are from journals that provide all content under an open access license such as Creative Commons. This icon will also be visible next to the title when viewing or opening a record. Additionally, a <b>Publication Flags</b> field will be visible below the Serial field in the record view:</p> <div id="help-pubflags"> <div></div> </div> <p>The Elsevier Science Direct Full Text Entitlement API is active in TRID. When full text is available from Elsevier journals, either on an open access basis or because your institution subscribes to the full text of that journal, the Elsevier icon will appear in the record view as well as in the Publication Flags.</p> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-general" href="#general-searchtips"> Advanced Search Tips <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="general-searchtips" class="panel-collapse collapse"> <div class="panel-body"> <p>These rules apply to any plain text field on the <a href="/results#show-filters">Advanced Search Filters</a> form. Plain text fields include: Keywords; Title; Serial or Conference; Paper, Report, Contract or Grant Numbers; Organization; Person.</p> <ul> <li>Entering terms in multiple fields searches for all terms in the query. </li> <li>For an exact match, enclose a phrase within quotes: <span class="style-input">"traffic signal"</span> <li> For a wild-card search, use an asterisk (*) after a partial word. <div class="alert alert-info callout-container" role="alert"> <div>Search example</div> <span class="glyphicon glyphicon-hand-right" aria-hidden="true"></span> <p><span class="style-input">transport*</span> will retrieve: transport, transportation and transporting.</p> </div> </li> <li> TRID will perform limited automatic stem searching when using quoted phrase searches. <div class="alert alert-info callout-container" role="alert"> <div>Search example</div> <span class="glyphicon glyphicon-hand-right" aria-hidden="true"></span> <p><span class="style-input">"technolog forecast*"</span> retrieves technological forecasting, technological forecasts, technology forecasts.</p> </div> </li> <li>For a Boolean search, use <code>OR</code>, <code>AND</code>, or <code>NOT</code> between words or phrases. <a href="https://onlinepubs.trb.org/Onlinepubs/tris/SearchHistoryBoolean.pdf">See more information</a> about using Boolean logic.</li> <li> A nested search may be performed by enclosing term(s) within parentheses. <div class="alert alert-info callout-container" role="alert"> <div>Search example</div> <span class="glyphicon glyphicon-hand-right" aria-hidden="true"></span> <p><span class="style-input">(plow* OR salt*) AND "snow removal"</span></p> </div> </li> <li>Stop Words: The following words are ignored in any search or quoted phrase in order to reduce the size of the search index and increase search speed: <code>about, also, an, and, another, any, are, as, at, be, because, been, being, between, both, but, by, came, can, come, could, did, do, does, each, else, for, from, get, got, has, had, he, have, her, here, him, himself, his, how, if, in, into, is, it, like, make, many, me, might, more, most, much, must, my, never, now, of, on, only, or, other, our, out, over, same, see, should, since, so, some, still, such, take, than, that, the, their, them, then, there, these, they, this, those, to, too, want, was, we, well, were, what, when, where, which, while, who, will, with, would, your</code>.</li> </ul> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-general" href="#general-modifysearch"> Modifying a Search <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="general-modifysearch" class="panel-collapse collapse"> <div class="panel-body"> <ul> <li>Click the <span class="filter-type searchaction"><a>Filters</a></span> button to see all available search fields.</li> <li>When submitting searches, click the <input type="button" class="button" value="Apply" /> button after entering all search criteria, or hit the Enter button on your keyboard.</li> <li>Add more criteria to narrow search results. Delete criteria to broaden search results.</li> <li>Remember that entering terms in multiple fields searches for all terms in the query.</li> <li>Click the <input type="button" class="button" value="Clear" /> button to begin a new search.</li> <li>Click the <span class="history-type searchaction"><a>History</a></span> button to rerun a previous search.</li> <li>In your History table, use the <b>Modify</b> link to create a new search using the saved search as a starting point.</li> </ul> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-general" href="#general-history"> Search History <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="general-history" class="panel-collapse collapse"> <div class="panel-body"> <p>The Search History feature in the TRID and RIP Databases enables users to combine their previous searches using Boolean operators to create more precise results. Users can view their search history by clicking on <span class="history-type searchaction"><a>History</a></span> in the toolbar or in mobile mode. <span class="history-type searchaction"><a>History</a></span> will be accessible through the ellipsis on the right side of the toolbar.</p> <ul> <li>The 50 most recent searches will be listed in the table and will be available unless you use the <span class="btn site-button"><a>Clear History</a></span> button at the bottom of the table or the Delete button <span class="icon" data-icon="delete"></span> to remove individual sets.</li> <li>Click <strong>View</strong> to revisit results.</li> <li>Results of a combined search will be returned in ascending order by date of publication / project start date.</li> <li>Combine sets in the History table using <a href="https://onlinepubs.trb.org/Onlinepubs/tris/SearchHistoryBoolean.pdf"><code>AND</code> or <code>OR</code> Boolean logic</a>.</li> <li> Alternatively, users can manually key in set numbers which allows for use of parentheses and the <code>NOT</code> Boolean operator. <div class="alert alert-info callout-container" role="alert"> <div>Example</div> <span class="glyphicon glyphicon-hand-right" aria-hidden="true"></span> <p><span class="style-input">(1 OR 2) NOT 3</span></p> </div> </li> <li>Combined sets cannot be shared as these are derived from the browser memory cache on your computer.</li> <li>Combined sets are not affected when individual sets used to create it are deleted.  For example, if a user creates a set combining two sets, 1 OR 2, which creates a new set 3, then later deletes set 2, the combined set 3 will still be present and will display the same records when <strong>View</strong> is clicked from the <strong>Actions</strong> column.</li> <li>To efficiently manage system resources in this publicly accessible search tool, TRID only displays the first 15,000 results from extremely large result sets.</li> <li>TRID will indicate 15,000 records regardless of how many more records match your search criteria.</li> <li> When using the Search History feature, only the first 15,000 records will be combined with the other set(s) regardless of which Boolean operator is employed. This means that results beyond the first 15,000 will not be factored into combined sets, regardless of sort order (Date published, Date record created, or Title). <div class="alert alert-info callout-container" style="gap: 1rem;" role="alert"> <div>Tip</div> <span class="glyphicon glyphicon-hand-right" aria-hidden="true"></span> <p> <div>Try to reduce the size of extremely large result sets by employing Date Range, Source, Result Type, and other limits, before combining with other sets through Search History.</div> <div style="font-weight: 600;">OR</div> <div>Craft a single search statement through the Advanced Search if possible.</div> </p> </div> </li> </ul> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-general" href="#general-navigation"> Viewing and Navigating Results <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="general-navigation" class="panel-collapse collapse"> <div class="panel-body"> <p>TRID displays 25 records per page by default. Use the <b>Records Per Page</b> selections at the very bottom of the <a href="/results#show-filters">Advanced Search Filters</a> to decrease or increase the number of results displayed per page. Records can be displayed in increments of 10, 25, 50 or 100. After selecting the desired number of records, click the <input type="button" class="button" value="Apply" /> button to save the setting for your current session.</p> <p>To navigate more than one page of results, use the arrow buttons at the top and bottom of each page of results. Key in a number to go to a particular page of results.</p> <div id="help-resultsbar"> <div></div> </div> <p>Note that <b>Sort Order</b> can be changed to Descending or Ascending.</p> <p>Records can also be sorted by:</p> <ul> <li><b>Published / Start Date</b> - Start Date is the date that a project starts.</li> <li><b>Created Date</b> – Date that a record was added to TRID.</li> <li><b>Title</b> – titles of publications, datasets or projects. This does NOT include Serial/Journal titles.</li> </ul> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-general" href="#general-markedactions"> Marked Records: Emailing, Saving or Exporting Results <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="general-markedactions" class="panel-collapse collapse"> <div class="panel-body"> <div class="alert alert-warning callout-container" role="alert"> <span class="glyphicon glyphicon-hand-right" aria-hidden="true"></span> <h3 style="font-size: 16px; font-style: normal; margin: 0;">Terms of use</h3> <p class="tou">Use of TRID, like all other portions of the NAS website, is governed by the NAS website <a href="https://www.nationalacademies.org/legal">Copyright Policy</a>, <a href="https://www.nationalacademies.org/legal/terms">Terms of Use</a>, and <a href="https://www.nationalacademies.org/legal/privacy">Privacy Statement</a>. By using TRID, you accept and agree to be bound by these policies.</p> </div> <ul> <li>Only 2,000 records at a time can be Printed/Emailed/Saved to your file.</li> <li>Use the checkboxes next to results to add records to your Marked Records list.</li> <li>Users may also mark all records on a page, or all records in a result list. These selections are available at the top of each page of results:</li> </ul> <p class="marking-actions"> Mark: <span> <span>Page</span> · <span>All</span> · <span>None</span> </span> </p> <ul> <li>Click None to remove records marked from that particular list of results.</li> <li>Records added to your Marked Records list will remain in the list until you click Clear.</li> </ul> <h2>Actions</h2> <section class="marked-actions"> <p id="markCount"><span>7 Marked Records</span></p> <ul style="display: flex; margin: 0; padding: 0; list-style-type: none;"> <li><span>Print</span></li>  <li><span>Email</span></li>  <li><span>Save</span></li>  <li><span>Clear</span></li> </ul> </section> <ul> <li><b>Print</b> marked records in various formats.</li> <li><b>Email</b> marked records to yourself or another person.</li> <li><b>Save</b> marked records for other uses including importing bibliographic software like RefWorks, EndNote, or ProCite.</li> <li><b>Clear</b> your marked record collection.</li> </ul> <h2>Formats</h2> <dl class="dl-horizontal"> <dt>Citation</dt> <dd>Plain text format for a reference citation.</dd> <dt>Citation & Abstract</dt> <dd>Plain text format for a reference citation which also includes the record abstract or description.</dd> <dt>RIS</dt> <dd>Used to import into bibliographic software like RefWorks, EndNote, Zotero or ProCite.</dd> <dt>CSV</dt> <dd>File format that separates values by commas (comma-delimited). Can be viewed in text and spreadsheet editors.</dd> <dt>Microsoft Word</dt> <dd>Full record output in Microsoft Word document format. Records are separated by page breaks.</dd> <dt>XML</dt> <dd>Structured output of full record data in XML for use in data transfer or import.</dd> <dt>HTML</dt> <dd>Full record output as a web page for print or display in a browser.</dd> </dl> <h2>Sort by</h2> <p>While exporting, saving, or emailing records, the Marked Records list can be sorted by:</p> <ul> <li>Date published or Start date of project; newest first or oldest first</li> <li>Date the record was created, i.e. the date the record was published in TRID; newest first or oldest first</li> <li>Alphabetically by title; A-Z or Z-A</li> </ul> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-general" href="#general-sharing"> Sharing Searches <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="general-sharing" class="panel-collapse collapse"> <div class="panel-body"> <p>After running a search from the TRID home page or from Advanced Search, the resulting URL in your web browser’s address bar can be copied and pasted to an email, document or website. The URL will run the same TRID search when clicked.</p> <ul> <li>Searches can be further modified to narrow or broaden results.</li> <li>URLs resulting from sets combined in the Search History feature will not work.</li> </ul> </div> </div> </div> </div>  <a name="Fields"></a> <h2 align="center"> Available Search Fields </h2> <div class="panel-group" id="accordion-fields"> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-fields" href="#fields-keyword"> Keyword Field <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="fields-keyword" class="panel-collapse collapse in"> <div class="panel-body"> <p>This field searches all of the indexed fields in TRID which include title, abstract, notes, index terms, subject areas, record accession numbers (both TRIS and ITRD), and authors.</p> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-fields" href="#fields-title"> Title Field <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="fields-title" class="panel-collapse collapse"> <div class="panel-body"> <p>Enter one or more terms from a title or the exact title to search on a publication title.</p> <ul> <li> This field searches article/paper titles as well as titles of reports, books, projects and datasets. <div class="alert alert-info callout-container" role="alert"> <div>Example</div> <span class="glyphicon glyphicon-hand-right" aria-hidden="true"></span> <p><span class="style-input">COVID OR pandemic*</span> will retrieve any record that has either of these two words anywhere in the title. Adding the asterisk to the end of the word pandemic will also retrieve “pandemics.”</p> </div> </li> </ul> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-fields" href="#fields-abstract"> Abstract Field <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="fields-abstract" class="panel-collapse collapse"> <div class="panel-body"> <p>Enter one or more keywords or phrases to search only the Abstract or summary portion of any given publication or project record. Abstracts summarize publications or projects, highlighting the major points and ideally why it is important.</p> <p>As with other fields in TRID, employ <a href="https://onlinepubs.trb.org/Onlinepubs/tris/SearchHistoryBoolean.pdf">Boolean (<code>AND</code>, <code>OR</code>, <code>NOT</code>) logic</a>, wild-cards using an asterisk (*) after a stem/root word, and nested searches enclosing terms in parentheses, as detailed in the <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-general" href="#general-searchtips" style="display: inline; padding: 0; margin: 0; text-decoration: underline;">Advanced Search Tips</a> above for more complex searches.</p> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-fields" href="#fields-serial"> Serial/Journal or Conference <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="fields-serial" class="panel-collapse collapse"> <div class="panel-body"> <p>Enter one or more terms to search for records from a serial/journal or conference. Enclose the title within quotes to return only results from a specific serial or conference.</p> <ul> <li>Entering a term(s) in this field will automatically limit your search to articles from journal publications and other types of series, as well as papers from conferences.</li> <li>For example, entering <span class="style-input">"Transportation Research Record"</span> will only return articles published in that journal.</li> <li>Entering <span class="style-input">"Transportation Research Board 100th Annual Meeting"</span> will only return papers from that particular conference.</li> <li><span class="style-input">Transportation Research Board Annual Meeting</span> would retrieve all papers from any Transportation Research Board annual meeting.</li> <li>To search for records from two or more journals, key in the <code>OR</code> operator: ex. <span class="style-input">"Safety Science" OR "Journal of Safety Research"</span></li> <li>Entering <span class="style-input">"Safety"</span> will retrieve all records from any journal or conference that have the word “safety” in the journal or conference title.</li> </ul> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-fields" href="#fields-subject"> Subject Areas <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="fields-subject" class="panel-collapse collapse"> <div class="panel-body"> <p>This field can be a very effective way to narrow or focus your searches. If you are interested in <i>runway pavements</i>, selecting <b>Aviation</b> will effectively exclude results about highway pavements, for example. Most records in TRID have at least one mode, and at least one function.</p> <ul> <li>If you select multiple subject areas, you can switch between <code>OR</code>/<code>AND</code> Boolean logic for your selections by switching the toggle button directly below the field between: <b>Match Any Subject Listed</b> or <b>Match All Subjects Listed</b>.</li> <li>Click in the field and use the down arrow or scroll button on your mouse to select your subject(s). On a smartphone, you’ll see a standard scroll wheel from which you can easily select multiple terms. You may also start typing to filter the list, then use the arrow keys or highlight with the cursor to select a subject area. Multiple subject areas may be selected in the same manner.</li> </ul> <p>There are 37 Subject Areas available:</p> <ul> <li>11 modes: Aviation; Freight Transportation; Highways; Marine Transportation; Motor Carriers; Passenger Transportation; Pedestrians and Bicyclists; Pipelines; Public Transportation; Railroads; Transportation (General)</li> <li>26 functions: Administration and Management; Bridges and other Structures; Construction; Data and Information Technology; Design; Economics; Education and Training; Energy; Environment; Finance; Geotechnology; History; Hydraulics and Hydrology; Law; Maintenance and Preservation; Materials; Operations and Traffic Management; Pavements; Planning and Forecasting; Policy; Research; Safety and Human Factors; Security and Emergencies; Society; Terminals and Facilities; Vehicles and Equipment</li> </ul> <div class="alert alert-info callout-container" role="alert"> <span class="glyphicon glyphicon-hand-right" aria-hidden="true"></span> <p>Note that ITRD Subjects are only searchable in the keyword field.</p> </div> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-fields" href="#fields-numbers"> Paper, Report, Contract or Grant Numbers <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="fields-numbers" class="panel-collapse collapse"> <div class="panel-body"> <p>Many documents include unique identifiers which are frequently alphanumeric, containing some combination of numbers and letters. For reports published by departments of transportation and University Transportation Centers, these numbers can be found on the title or technical documentation pages.</p> <div id="help-reportnumbers"> <div></div> </div> <p>Enter complete or partial terms to search for report, contract or grant numbers.</p> <p>To search for multiple terms, use <code>OR</code> to separate search terms.</p> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-fields" href="#fields-source"> Source <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="fields-source" class="panel-collapse collapse"> <div class="panel-body"> <p>A source is the organization or type of organization that provided the records to the TRID Database. Limiting to project records from Research in Progress (RIP) is also an option. If no selection is marked, all Sources are included in your search by default. One or more Sources can be selected to limit your search, and the default Boolean operator between each selection will be 'OR.'</p> <p>Sources include:</p> <ul> <li><b>TRIS</b> – records indexed by TRB’s <a href="https://www.trb.org/InformationServices/InformationServices.aspx">Transportation Research Information Service</a>.</li> <li><b>ITRD</b> – provided by member organizations of <a href="https://www.internationaltransportforum.org/jtrc/itrd/">International Transport Research Documentation</a>.</li> <li><b>TRB</b> – limits to TRB publications and projects, including <i>Transportation Research Record</i>, <i>TR News</i>, and <i>TRB Annual Meeting Papers</i>.</li> <li><b>RIP</b> – limits to project records from TRB’s <a href="https://rip.trb.org/">Research in Progress Database</a>.</li> <li><b>UTC</b> – (University Transportation Center) limits to projects, datasets, or reports from <a href="https://www.transportation.gov/content/university-transportation-centers">University Transportation Centers (UTC) Program</a>, which is funded by the US Department of Transportation.</li> <li><b>ATRI</b> – (Australian Transport Index) limits to records provided by the <a href="https://www.arrb.com.au/">Australian Road Research Board (ARRB)</a>.</li> <li><b>USDOT</b> – (US Federal Department of Transportation) limits to records for publications, datasets or projects published, funded, sponsored or authored by the US Department of Transportation or one of its agencies.</li> <li><b>STATEDOT</b> – (US State Departments of Transportation) limits to records for publications, datasets or projects published, funded, sponsored or authored by state-level departments of transportation in the United States.</li> </ul> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-fields" href="#fields-terms"> Index Term <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="fields-terms" class="panel-collapse collapse"> <div class="panel-body"> <p>Index terms are terms from the <a href="https://trt.trb.org/">Transportation Research Thesaurus (TRT)</a>. Begin typing an index term. Matching terms will appear in a drop-down list from which you can select terms. Best matches will appear first. Results will include non-preferred terms that have been assigned to the preferred TRT term.</p> <p>More than one term may be selected. The default Boolean operator is <code>OR</code>. You can switch between <code>OR</code>/<code>AND</code> Boolean logic for your selections by switching the toggle button directly below the field between: <b>Match Any Term Listed</b> or <b>Match All Terms Listed</b>.</p> <p>For more complex searches use the <a href="/History">Search History feature</a> to combine those searches using the <code>AND</code> or <code>NOT</code> <a href="https://onlinepubs.trb.org/Onlinepubs/tris/SearchHistoryBoolean.pdf">Boolean operators</a>.</p> <div class="alert alert-info callout-container" role="alert"> <span class="glyphicon glyphicon-hand-right" aria-hidden="true"></span> <p>Non-TRT terms and ITRD Thesaurus terms do not appear in the drop-down list but are still searchable in the Keywords field and Partial Index Term field.</p> </div> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-fields" href="#fields-partialterm"> Global Free-text Index Term <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="fields-partialterm" class="panel-collapse collapse"> <div class="panel-body"> <p>This field searches all <b>Index Terms</b>, including terms from the <a href="https://trt.trb.org/">Transportation Research Thesaurus (TRT)</a> and other controlled vocabularies that may have been applied to index a publication or project. Indexing captures the essential aboutness or core concepts of an item. Other controlled vocabularies in TRID include the Australian Transport Research Index (ATRI) Thesaurus, and the International Transport Research Documentation (ITRD) Thesaurus. It also searches Geographic Terms and Identifier Terms (proper names for human-constructed facilities/things like Golden Gate Bridge, names for airports, computer programs, corporate names and persons) that are additional key descriptors of the publication/project.</p> <p>Unlike the <b>Index Term</b> field, users can employ exact phrase matching (with double quotes), wild-cards (*), <a href="https://onlinepubs.trb.org/Onlinepubs/tris/SearchHistoryBoolean.pdf">Boolean (<code>AND</code>, <code>OR</code>, <code>NOT</code>) logic</a>, and use parentheses as detailed in the <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-general" href="#general-searchtips" style="display: inline; padding: 0; margin: 0; text-decoration: underline;">Advanced Search Tips</a> section above.</p> <div class="alert alert-info callout-container" role="alert"> <div>Search example</div> <span class="glyphicon glyphicon-hand-right" aria-hidden="true"></span> <p><span class="style-input">galvan* AND bridge*</span> This captures all records indexed with terms from the TRT and other controlled vocabularies with galvanic, galvanized, etc. AND any term containing the root word, bridge.</p> </div> <p>Subject Areas are not searched as part of any query used here. These can be employed in the separate <b>Subject Areas</b> field to further refine or narrow one’s search.</p> <figure class="term-search-figure"> <div class="partial-record-view"> <h2>Subject/Index Terms </h2> </div> <div class="partial-record-view"> <ul class="record-info highlight-box"> <li> <strong>TRT Terms: </strong> <span class="faux-link">Accessibility</span>; <span class="faux-link">Auditory perception</span>; <span class="faux-link">Blindness</span>; <span class="faux-link">Construction</span>; <span class="faux-link">Perception</span>; <span class="faux-link">Persons with disabilities</span>; <span class="faux-link">Specifications</span>; <span class="faux-link">Standards</span>; <span class="faux-link">State of the art reports</span>; <span class="faux-link">Tactile perception</span></li> <li> <strong>Geographic Terms: </strong> <span class="faux-link">Germany</span> </li> <li> <strong>ITRD Terms: </strong> <span class="faux-link"> <span style="color: Gray; font-style: italic;">3655</span>: Bau</span>; <span class="faux-link"><span style="color: Gray; font-style: italic;">1726</span>: Behinderter</span>; <span class="faux-link"><span style="color: Gray; font-style: italic;">2075</span>: Blindheit</span>; <span class="faux-link"><span style="color: Gray; font-style: italic;">8125</span>: Deutschland</span>; <span class="faux-link"><span style="color: Gray; font-style: italic;">2081</span>: Hörvermögen</span>; <span class="faux-link"><span style="color: Gray; font-style: italic;">187</span>: Norm (tech)</span>; <span class="faux-link"><span style="color: Gray; font-style: italic;">177</span>: Richtlinien</span>; <span class="faux-link"><span style="color: Gray; font-style: italic;">8588</span>: Stand der Technik (Bericht)</span>; <span class="faux-link"><span style="color: Gray; font-style: italic;">9120</span>: Tastbar</span>; <span class="faux-link"><span style="color: Gray; font-style: italic;">2229</span>: Wahrnehmung</span>; <span class="faux-link"><span style="color: Gray; font-style: italic;">9139</span>: Zugänglichkeit</span></li> </ul> </div> <div class="partial-record-view"> <ul> <li> <strong>Subject Areas: </strong>Construction; I10: WIRTSCHAFT UND VERWALTUNG; I21: PLANUNG VON VERKEHRSINFRASTRUKTUR; </li> </ul> </div> <div class="partial-record-view" style="grid-column: 1 / 2; grid-row: 5 / 6;"> <h2>Subject/Index Terms </h2> </div> <div class="partial-record-view closer-row"> <ul> <li> <strong>TRT Terms: </strong> <span class="faux-link">Mobility applications</span>; <span class="faux-link">Operating costs</span>; <span class="faux-link">Public transit</span>; <span class="faux-link">Simulation</span>; <span class="faux-link">Socioeconomic factors</span>; <span class="faux-link">Suburbs</span>; <span class="faux-link">Travel demand</span></li> <li> <strong>Identifier Terms: </strong> <span class="faux-link">King County Metro Transit</span>; <span class="faux-link">SUMO (Traffic simulation model)</span></li> </ul> </div> <div class="partial-record-view closer-row"> <ul> <li> <strong>Geographic Terms: </strong> <span class="faux-link">King County (Washington)</span>; <span class="faux-link">Puget Sound Region</span>; <span class="faux-link">Seattle-Tacoma Metropolitan Area (Washington)</span></li> </ul> </div> <div class="callout-box" style="--start-col: 3; --start-row: 1;"> Searches only this part of any given record. This area can include terms from other controlled vocabularies. <svg> <defs> <marker id="markerArrow" markerWidth="13" markerHeight="13" refX="2" refY="6" orient="auto"> <path d="M 2 4 L 2 8 L 8 6 L 2 4" style="fill: #000000;" /> </marker> </defs> <line class="arrow" data-points-to-row="2" data-points-to-col="2" data-origin-edge="bottom" data-target-edge="right" /> </svg> </div> <div class="callout-box grid-2col grid-left" style="--start-col: 2; --start-row: 4;"> But does NOT search the <b>Subject Areas</b> <svg> <defs> <marker id="markerArrow" markerWidth="13" markerHeight="13" refX="2" refY="6" orient="auto"> <path d="M2,2 L2,9 L10,6 L2,2" style="fill: #000000;" /> </marker> </defs> <line class="arrow" data-points-to-row="3" data-points-to-col="1" data-origin-edge="left" data-target-edge="bottom" /> </svg> </div> <div class="callout-box grid-2col" style="--start-col: 2; --start-row: 5; max-width: 28rem;"> This area can also include Geographic and Identifier Terms. <svg> <defs> <marker id="markerArrow" markerWidth="13" markerHeight="13" refX="2" refY="6" orient="auto"> <path d="M2,2 L2,9 L10,6 L2,2" style="fill: #000000;" /> </marker> </defs> <line class="arrow" data-points-to-row="6" data-points-to-col="2" data-origin-edge="bottom" data-target-edge="right" data-next-col="1" /> </svg> <svg> <defs> <marker id="markerArrow" markerWidth="13" markerHeight="13" refX="2" refY="6" orient="auto"> <path d="M2,2 L2,9 L10,6 L2,2" style="fill: #000000;" /> </marker> </defs> <line class="arrow" data-points-to-row="7" data-points-to-col="2" data-origin-edge="bottom" data-target-edge="right" data-next-col="1" /> </svg> </div> </figure> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-fields" href="#fields-organization"> Organization/Corporate Author <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="fields-organization" class="panel-collapse collapse"> <div class="panel-body"> <p>Enter a partial or complete organization name to search among publishers, corporate or institutional authors, funding organizations, performing organizations, source organizations, or conference sponsors. You may need to use Boolean logic.</p> <ul> <li>For example, <span class="style-input">Maine Department of Transportation</span> will return records for reports, datasets and projects in which Maine Department of Transportation is a Corporate Author, Sponsor Organization, Performing Organization or Conference Sponsor.</li> <li><span class="style-input">Maine</span> will also bring back records in which Maine Department of Transportation is a Corporate/Sponsor/Performing organization, but also records with University of Maine.</li> </ul> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-fields" href="#fields-person"> Person/Personal Author <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="fields-person" class="panel-collapse collapse"> <div class="panel-body"> <p>Enter a person's last/family name and first/given name or initial to search among authors and editors. You can use wildcards and Boolean logic to search across all matching names, including first names.</p> <p>Note that a query for <span class="style-input">Smith, R*"</span> will return results for 'Smith, Robert,' 'Smith, Richard' and authors 'Smith and Robert' or other last/family and first/given names that begin with the letter R. It will not return results for 'Smith, Bob'. Please keep in mind that due to differences in indexing practices among the various contributors to the TRID Database, some records contain only first/given initials rather than full names.</p> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-fields" href="#fields-resulttype"> Result Type <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="fields-resulttype" class="panel-collapse collapse"> <div class="panel-body"> <p>Select from the list to limit your search to publications, projects, monographs (reports, books, collections), journal articles/conference papers, <b>datasets</b>, or a combination.</p> <p>If no selection is marked, all Result Types are included in your search by default. One or more Result Types can be selected to limit your search, and the default Boolean operator between each selection will be 'OR.'</p> <ul> <li>The default Result Type is 'All publications and projects' which includes all the Result Types listed below.</li> <li>'Articles and papers' limits your search to records describing journal articles (e.g., articles from <i>Transportation Research Record</i>) or conference papers (e.g., Transportation Research Board Annual Meeting papers).</li> <li> 'Datasets' limits to all records with a media type of 'dataset.' Datasets are organized collections of data produced by performed research in a fixed period of time. Datasets in TRID often are those arising from research and development (R&D) programs managed by U.S. Department of Transportation (DOT). They frequently support a DOT-funded technical report, but can also describe a "standalone" dataset with no accompanying report. <ul> <li>Dataset records will indicate either: '[dataset]' OR '[supporting dataset]' in the title field.</li> <li>All dataset records will contain a Dataset URL. Dataset records that support a final report will also contain a Record URL that links to full text of the report.</li> </ul> </li> <li>'Reports, books and collections' limits to TRB reports, federal and state department of transportation technical reports, reports published by non-governmental organizations, commercially published books, and works that collect conference papers in one volume, to name a few examples.</li> <li> <p>'Projects' limits to records describing current or recently completed transportation research projects. These records are primarily derived from the <a href="https://rip.trb.org/">Research in Progress (RIP) Database</a>. These projects are primarily funded by the U.S. Department of Transportation and State Departments of Transportation. University transportation research also is included.</p> <p>Project records will have this icon in the record list:</p> <div class="major-marker" data-icon="project"> <i class="major-icon"></i> <span class="major-marker-label">PROJECT</span> </div> </li> <li>'All publications' includes everything in TRID except projects.</li> </ul> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-fields" href="#fields-language"> Language of Publication <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="fields-language" class="panel-collapse collapse"> <div class="panel-body"> <p>Select specific languages to restrict results to records published in any of those languages. If you are unsure about the language of publication, it is best to leave this field blank.</p> <p>To select a language(s), put your cursor in the field and use the scrolling feature to highlight a language. Select as many languages as necessary.</p> </div> </div> </div> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion-fields" href="#fields-date"> Select Date Range <div class="click-hint glyphicon glyphicon-expand" aria-hidden="true"></div> </a> </h4> </div> <div id="fields-date" class="panel-collapse collapse"> <div class="panel-body"> <p> The default setting is set to search by the date <code>published</code> or date that a project started or will start OR you may select <code>created</code> to search by the date on which records were initially entered into the database.</p> <p>There are two methods for limiting your search by date: <b>custom date range</b> which uses a slider to set a time range OR using one or both of the <code>after</code> and <code>before</code> text boxes, in which you can enter specific dates in the yyyy or yyyymm formats. </p> <p>Note that the yyyymm format works best when using <code>created</code> date as not all publications indicate a month of publication. When using yyyymm format with <code>published</code> date, records with only a year of publication may be excluded from results depending on how wide a date range you enter.</p> </div> </div> </div> </div> </div> </div> </main> </div> <footer id="footer" class="container-fluid"> <div class="row" id="colophon"> <p id="colophon-nas">The National Academies of Sciences, Engineering, and Medicine</p> <address id="colophon-address">500 Fifth Street, NW | Washington, DC 20001 | Τ: <a href="tel://2023342000">202.334.2000</a></address> <p id="colophon-legal">Copyright © 2025 National Academy of Sciences. 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const pointsToCol = +arrow.dataset.pointsToCol; const originEdge = arrow.dataset.originEdge; const targetEdge = arrow.dataset.targetEdge; const nextCol = +arrow.dataset.nextCol || 0; const gridCellStyles = getComputedStyle(arrow.closest('.callout-box')); var arrowSource = getCellPosition( +gridCellStyles.getPropertyValue('grid-row-start')-1, +gridCellStyles.getPropertyValue('grid-column-start')-1 + nextCol ); // Guard clause; early return if grid is not displaying if(Number.isNaN(arrowSource.left)) return; var arrowTarget = getCellPosition(pointsToRow-1, pointsToCol-1); if(originEdge === 'bottom') { arrow.setAttribute('x1', arrowSource.left + arrowSource.width / 2 + 10); arrow.setAttribute('y1', arrowSource.top + arrowSource.height + 10 + 4); if(targetEdge === 'bottom') { arrow.setAttribute('x2', arrowTarget.left + arrowTarget.width / 2 + 10); arrow.setAttribute('y2', arrowTarget.top + arrowTarget.height + 10); } else { // default to "right" arrow.setAttribute('x2', arrowTarget.left + arrowTarget.width + 10); arrow.setAttribute('y2', arrowTarget.top + arrowTarget.height / 2 + 10); } } else { // default to "left" arrow.setAttribute('x1', arrowSource.left + 10 - 4); arrow.setAttribute('y1', arrowSource.top + arrowSource.height / 2 + 10 + 4); if(targetEdge === 'bottom') { arrow.setAttribute('x2', arrowTarget.left + arrowTarget.width / 2 + 10); arrow.setAttribute('y2', arrowTarget.top + arrowTarget.height + 10); } else { // default to "right" arrow.setAttribute('x2', arrowTarget.left + arrowTarget.width + 10); arrow.setAttribute('y2', arrowTarget.top + arrowTarget.height / 2 + 10); } } }); }; function getCellPosition(targetRow, targetColumn) { // Specify the target cell's row and column indices (0-based) // Select the grid container const gridContainer = document.querySelector('.term-search-figure'); // Get computed styles of the grid container const gridStyles = getComputedStyle(gridContainer); // Calculate the width of each column and height of each row const columnWidths = gridStyles.getPropertyValue('grid-template-columns').split(' ').map(parseFloat); const rowHeights = gridStyles.getPropertyValue('grid-template-rows').split(' ').map(parseFloat); // Get the grid gap values const columnGap = parseFloat(gridStyles.getPropertyValue('column-gap')) || 0; const rowGap = parseFloat(gridStyles.getPropertyValue('row-gap')) || 0; // Calculate `left` and `top` by summing widths and heights of preceding rows and columns const left = columnWidths.slice(0, targetColumn).reduce((acc, width) => acc + width, 0) + (columnGap * targetColumn); const top = rowHeights.slice(0, targetRow).reduce((acc, height) => acc + height, 0) + (rowGap * targetRow); // Width and height of the target cell const width = columnWidths[targetColumn]; const height = rowHeights[targetRow]; return { left, top, width, height }; } function docReady(fn) { // see if DOM is already available if(document.readyState === "complete" || document.readyState === "interactive") { // call on next available tick setTimeout(fn, 1); } else { document.addEventListener("DOMContentLoaded", fn); } } docReady(startFunction); </script> </body> </html>