National Transportation Library

The National Transportation Library (NTL) contains documents on intelligent transportation systems topics published or sponsored by the U.S. Dept. of Transportation. Most of the documents are in PDF format.

NTL Quick Search (All Words)

For a quick search, enter your search terms below. Include phrases in quotations.

For searches, click one of the links below.

  • Simple Search - (search by NTL number, report number, author, title, subjects, or full text)
  • Browse Catalog – (alphabetical title listing linked to documents)
  • Advanced Search - (Combine different indexes such as 'Author' AND 'Title' OR 'Subject'.)

Search Help


Hardcopies of some of the more recent U.S. DOT-published documents can be ordered by sending an e-mail to ITSPUBS

1200 New Jersey Avenue, SE • Washington, DC 20590 • 800.853.1351 • E-mail OST-R

Accessibility | Disclaimer | Fast Lane | FedStats | Freedom of Information Act | No FEAR Act | OIG Hotline | Privacy Policy | | White House

OST-R's privacy policies and procedures do not necessarily apply to external web sites. We suggest contacting these sites directly for information on their data collection and distribution policies.