Keywords

This field searches all of the indexed TRID fields. These would include:

• Title

• Original title

• Abstract

• Notes

• Index terms

• Subject areas

• Accession numbers (TRIS and ITRD)

• Serials

• Authors, corporate authors, and other related organizations

Titles

Enter a word or phrase to search the title field.

Persons

Enter a key person's last name to search across the following fields:

To search for multiple, separate thier names with "OR".

Organizations

Enter a complete or partial agency name to search across the following fields:

To search for multiple, separate search criteria with "OR".

Serials or Conferences

Use this field to restrict a search to a specific serial or conference record. Be sure to check the publications dates to expand or limit the years included.

Identifiers

Enter complete or partial criteria to search across the following fields:

• ISBN [format: 123-45-67890-12-3]

  - may omit dashes: 1234567890123

• ISSN [format: 1234-5678]

  - may omit dashes: 12345678

• Report Number

• Contract Number

To search for multiple, separate search criteria with "OR".

Full Text

Selecting "Limit results to free or fee-based full-text links" will return only records that contain links to the full-text item. The full-text may be available for free or for a fee.

Languages

Limiting by language to English, German, French, or Spanish limits the search to records that are in these selected language(s) and does not refer to the language of the original document.

Languages

Limiting by language to English, German, French, or Spanish limits the search to records that are in these selected language(s) and does not refer to the language of the original document.

Languages

Limiting by language to English, German, French, or Spanish limits the search to records that are in these selected language(s) and does not refer to the language of the original document.

Languages

Limiting by language to English, German, French, or Spanish limits the search to records that are in these selected language(s) and does not refer to the language of the original document.

Subject Categories

Select from the list of various TRB subject areas.

Results Types

Select the type of results you would like returned from the following list:

• All Publications

  Includes any reports, books, collections, articles, and papers

• Only Reports, Books, Collections

  Includes only reports, books, collections

• Articles, and Papers

  Includes any articles, and papers

• Only Projects

  Includes only research project records

Record Sources

Select from the list to refine your search by a specific record source provider.

Sources in the list are not mutually exclusive, nor do they represent all available record sources. In order to search across all records, you must select "All sources."

Index Terms

Enter a complete or partial TRT index term or ITRD term to be searched. Separate multiple entities with "OR" to be exclusive and "AND" to be inclusive.

Search the Transportation Research Thesaurus to find index terms to add to this field.

The ITRD Thesaurus is also available for download in PDF format.

Dates

Enter a start and an end date or select one of the presets. Can refer to either the following:

Created Dates

Enter a start and an end date or select one of the presets. Represents the dates the records were added to the database.

Sort By

Use these parameters to change how the records are sorted.