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Official websites use .gov
A .gov website belongs to an official government organization in the United States.

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Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Orphan Pages

An orphan page is a page of a website which does not point to any link from another site. The only way to access an orphan web page is to know its address (URL) as it is generally not indexed in search engines. The Department of Transportation (DOT) conducts periodic content reviews of DOT and Operating Administration (OA) websites to ensure orphan pages are eliminated.