Page Text: Enter one or more terms from a title or the exact title to search on a publication title.
This field searches article/paper titles as well as titles of reports, books, projects and datasets.
Example
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.”
Serial/Journal or Conference
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.
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.
For example, entering
will only return articles published in that journal.
Entering
will only return papers from that particular conference.
would retrieve all papers from any Transportation Research Board annual meeting.
To search for records from two or more journals, key in the OR operator: ex.
Entering
will retrieve all records from any journal or conference that have the word “safety” in the journal or conference title.
Subject Areas
This field can be a very effective way to narrow or focus your searches. If you are interested in runway pavements, selecting Aviation will effectively exclude results about highway pavements, for example. Most records in TRID have at least one mode, and at least one function.
If you select multiple subject areas, you can switch between OR/AND Boolean logic for your selections by switching the toggle button directly below the field between: Match Any Subject Listed or Match All Subjects Listed.
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.
There are 37 Subject Areas available:
11 modes: Aviation; Freight Transportation; Highways; Marine Transportation; Motor Carriers; Passenger Transportation; Pedestrians and Bicyclists; Pipelines; Public Transportation; Railroads; Transportation (General)
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
Note that ITRD Subjects are only searchable in the keyword field.
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.
Enter complete or partial terms to search for report, contract or grant numbers.
To search for multiple terms, use OR to separate search terms.
Source
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. Only one Source can be selected per search. If you need to limit your search to two or more Sources, repeat your search while selecting the appropriate Source, then use the Search History feature to combine those searches using the OR Boolean operator .
Sources include:
ITRD – provided by member organizations of International Transport Research Documentation .
TRB – limits to TRB publications and projects, including Transportation Research Record, TR News, and TRB Annual Meeting Papers.
RIP – limits to project records from TRB’s Research in Progress Database .
UTC – (University Transportation Center) limits to projects, datasets, or reports from University Transportation Centers (UTC) Program , which is funded by the US Department of Transportation.
ATRI – (Australian Transport Index) limits to records provided by the Australian Road Research Board (ARRB) .
USDOT – (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.
STATEDOT – (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.
Index Term
Index terms are terms from the Transportation Research Thesaurus (TRT) . 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.
More than one term may be selected. The default Boolean operator is OR. You can switch between OR/AND Boolean logic for your selections by switching the toggle button directly below the field between: Match Any Term Listed or Match All Terms Listed.
For more complex searches use the Search History feature to combine those searches using the AND or NOT Boolean operators .
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.
Partial Index Term
This field searches all Index Terms including: terms from the Transportation Research Thesaurus (TRT); Geographic Terms; Identifier Terms and ITRD Terms.
It also allows a user to employ Boolean (AND, OR, NOT) logic . See Advanced Search Tips above for examples.
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.
For example,
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.
will also bring back records in which Maine Department of Transportation is a Corporate/Sponsor/Performing organization, but also records with University of Maine.
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.
Note that a query for
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.
Select from the list to limit your search to publications, projects, monographs (reports, books, collections), journal articles/conference papers, datasets, or a combination.
The default Result Type is 'All publications and projects' which includes all the Result Types listed below.
'Articles and papers' limits your search to records describing journal articles (e.g., articles from Transportation Research Record) or conference papers (e.g., Transportation Research Board Annual Meeting papers).
'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.
Dataset records will indicate either: '[dataset]' OR '[supporting dataset]' in the title field.
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.
'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.
'Projects' limits to records describing current or recently completed transportation research projects. These records are primarily derived from the Research in Progress (RIP) Database . These projects are primarily funded by the U.S. Department of Transportation and State Departments of Transportation. University transportation research also is included.
'All publications' includes everything in TRID except projects.
Language of Publication
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.
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.
The default is set to search all dates. To narrow your search, select one of the preset buttons:
1 Month