What does USDOT stand for?

What does USDOT mean?

USDOT	United States Department of Transportation Regional » Time Zones
USDOT	United States Department of Transportation Regional » Railroads
USDOT	United States Department of Transportation Medical » Veterinary
USDOT	United States Department of Transportation Governmental » US Government
USDOT	United States Department of Transportation Governmental » Transportation
USDOT	United States Department of Transportation Governmental » NASA
USDOT	United States Department of Transportation Governmental » Military
USDOT	United States Department of Transportation Community » Media
USDOT	United States Department of Transportation Community » Religion
USDOT	United States Department of Transportation Community » Sports
USDOT	United States Department of Transportation Academic & Science » Ocean Science
USDOT	United States Department of Transportation Academic & Science » Universities
USDOT	United States Department Of Transportation Miscellaneous » Construction