Department of Transportation (DOT)
HQ: Washington, D.C.
Other locations: FAA and FHWA offices nationwide
Subcomponents: Federal Aviation Administration (DOT); Federal Highway Administration (DOT); All Other Components (DOT)
Mission: To ensure a fast, safe, efficient, accessible, and convenient transportation system. The Department of Transportation’s duties include setting national transportation policy, planning and funding the construction of highways and mass transit systems, and regulating aviation, maritime, and railroad operations.