Official US Government Icon

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

Secure Site Icon

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.

Portions of the Department of Transportation are currently in shutdown/furlough status due to a lapse in appropriations. Please continue to monitor this page for updates on DOT’s operating status.

Common Operating Environment (COE)

Document
OST - COE - PIA - 2025.pdf

The Department of Transportation (DOT) Office of the Secretary (OST) IT Common Operating Environment (COE) is a General Support System (GSS) designed to support both small- and largescale, general- and special purpose data processing systems. It provides the essential Information Technology (IT) services and resources required to enable DOT users to perform their daily operations effectively. These services include network connectivity, domain authentication, directory services, file and print services, IT security, email, server management, and database support for both Oracle and Microsoft SQL systems. Managed by the Office of the Chief Information Officer (OCIO), Infrastructure and Operations team, the COE delivers a comprehensive suite of shared, commodity IT services that empower DOT program offices to fulfill their mission requirements. This Privacy Impact Assessment (PIA) is completed in accordance with the E-Government Act of 2002.  

DOT is committed to ensuring that information is available in appropriate alternative formats to meet the requirements of persons who have a disability. If you require an alternative version of files provided on this page, please contact privacy@dot.gov.
Last updated: Thursday, October 23, 2025